The Commission of Inquiry

On March 12, 1926, a ledger for the five-hundred-escudo denomination was opened in the Bank of Portugal’s headquarters. The clerk consulted its section for notes received from Waterlow & Sons, running his finger down the column of serial numbers. He was working from a list compiled in Porto, where duplicate serial numbers had been discovered. The numbers appearing on notes that had circulated through Reis’s bank were already recorded as notes that had never been issued. They existed in two places at once, a physical impossibility that could only mean the Bank of Portugal’s own printing plates had been used to manufacture currency outside its control.

This clerk’s work marked the beginning of what would become the Portuguese state’s official reckoning with the fraud. The parliamentary commission of inquiry, established by the new military government that had seized power in the 28 May 1926 coup d’état against the Portuguese First Republic, faced a task different from both the criminal court and the London litigation. The criminal trial would judge Artur Virgílio Alves dos Reis and his accomplices. The English courts would determine liability between the Bank of Portugal and Waterlow & Sons.

But the commission’s mandate reached higher, toward the institution that had allowed a clerk with forged credentials to compromise its currency. The new regime, installed in the wake of financial chaos that the fraud had helped precipitate, needed to understand how the nation’s central bank had failed so completely. The commission’s method was to follow the paper trail that the bank itself had generated, using its own systems of record against it.

The investigators worked through the note registers with methodical patience. These volumes were the bank’s internal instruments of control, maintained to track every banknote from creation to destruction. Each recorded serial numbers, dates of receipt from the printer, dates of issue to the public, and eventually dates of return and cancellation. The commission’s clerks reconstructed the path of fraudulent notes by comparing these records against physical currency that had been recovered. From this analysis emerged a clear pattern: notes printed by Waterlow & Sons on Reis’s forged authorization had entered circulation without appearing in any legitimate issue record. The bank’s own documentation proved it had never authorized these notes, yet they bore every mark of authenticity. The registers revealed something else as well—the scale of unauthorized issue was larger than initially suspected, and its distribution through Reis’s bank had been systematic rather than opportunistic.

The commission’s composition reflected its political nature. Appointed by the new National Dictatorship, its members were charged with producing a narrative of institutional failure that could serve the regime’s purposes. The military government understood that the fraud had contributed to the collapse of public confidence that helped justify its coup against the Portuguese First Republic. Thus the inquiry operated in a space between genuine forensic investigation and political instrument. Its findings would need to be credible enough to guide policy and satisfy international creditors, yet pointed enough to justify the new order’s claims to competence. The commission proceeded carefully, aware that its work would shape both domestic politics and the Bank of Portugal’s position in the London litigation.

Particular attention fell upon the events of December 1925, when exposure finally came. The commission examined the report from the Porto branch, where staff had noted suspicious circumstances surrounding large deposits from the Angola & Metropole despite their inability to find technical evidence of counterfeiting. Tracing the dispatch of inspector João Teixeira Direito to Porto, the investigators reconstructed his examination of the foreign-exchange firm Pinto da Cunha and his initial frustration at finding nothing demonstrably false. The breakthrough—notes with duplicate serial numbers—appeared in the record as a chance discovery, the result of systematic sorting rather than inspired detection. Official directives preserved in the bank’s files documented the subsequent order for all agencies to examine their holdings by serial number, which revealed widespread duplication.

This paper trail led inexorably to Lisbon, and specifically to the office of Governor Inocêncio Camacho Rodrigues. The commission examined channels through which information had reached him, and decisions he had made in response. A particular focus was the letter that Reis claimed to have written, discussing contracts with the Dutch printer Marang. Reis had testified that this letter, addressed to Rodrigues, had been lost in the mail. Whether fabrication or genuine communication gone astray, its existence as a claim forced examination of the governor’s vigilance. Criminal intent did not need to be proven. The purpose was to establish a pattern of oversight sufficient to account for how unauthorized currency had been manufactured with the bank’s own plates and placed into circulation without detection.

What the investigation revealed, its members termed procedural failures, though the term hardly captured the nature of what they found. The Bank of Portugal’s controls had been designed around assumptions of good faith and proper authorization. Verification systems checked that notes came from approved printers, that serial numbers matched issued ranges, that physical characteristics met specifications. They were not designed to detect notes genuine in every material respect except origin. Fraudulent currency passed every technical test because it was technically perfect. Controls had been constructed to prevent counterfeiting, not to detect unauthorized production using authentic means. Reis had exploited a systemic vulnerability: procedures assumed the threat came from outside, from forgers attempting to imitate legitimate currency. They did not contemplate that legitimacy itself could be hijacked.

Across several years, the commission’s reports built this analysis into an official narrative. First findings came in 1926 and 1927, with subsequent volumes extending into 1929 and 1930. Each installment added detail to reconstruction of the fraud’s mechanics and the bank’s failures. Investigators documented how the forged contract from the Bank of Portugal had been accepted by Waterlow & Sons without direct verification from Lisbon. They traced how genuine paper, held by the London printer for legitimate orders, had been used for unauthorized issue. Logistics by which Reis transported notes to Portugal were established, using diplomatic channels and commercial shipping. Technical precision served political purpose: demonstration that the new regime could master complexity and produce authoritative accounts.

Yet the commission’s work also created constraints for the government it served. Detailed record of institutional failure could not be easily contained. Reports documented not merely isolated errors but patterns of inadequate verification at multiple points. Note registers, correspondence files, internal memoranda—all revealed an organization that had trusted too much in formal propriety and inspected too little in substance. What the investigation exposed without fully naming was a condition where strict adherence to formal steps had blinded the institution to the substantive falsity of documents moving through them. Papers were checked for signatures, seals, proper channels. Whether their content was true had not been sufficiently questioned.

Implications for Camacho Rodrigues became increasingly difficult to evade. The commission’s findings did not accuse him of complicity in the fraud, but documented his presence at the center of an organization that had failed to detect it. Awareness of the Marang contracts, response to early warnings, supervision of verification procedures—all came under scrutiny. Defenders could point to the sophistication of deception, apparent authenticity of forged documents, limited nature of warning signs before December 1925. But accumulating record of procedural gaps made such defenses appear as excuses. The bank had been entrusted with the nation’s currency. It had allowed that currency to be compromised through its own printing arrangements. Someone would have to answer.

Parallel developments in London shaped and were shaped by the commission’s work. The Bank of Portugal had initiated civil action against Waterlow & Sons. Portuguese investigators were aware that their findings would serve both domestic policy and international litigation. Detailed reconstruction of the fraud’s mechanics provided factual foundation for claims of victimization. Yet the same findings documented verification failures that Waterlow’s lawyers would use to argue contributory negligence. Reports served double duty, requiring careful calibration. Investigators needed to establish printer liability without absolving bank officials.

Note registers proved particularly valuable for this purpose. By tracing individual serial numbers, the commission demonstrated exactly which notes had been printed without authorization and how they had entered circulation. This specificity countered any suggestion that the fraud had been undetectable. Records showed that proper verification procedures, had they been followed with adequate rigor, would have identified discrepancies. The bank’s own systems contained information needed to prevent the fraud; those systems had not been used effectively. Negligence, perhaps, but of a kind that reinforced rather than diminished Waterlow’s liability. The printer had provided the means; the bank had failed to monitor their use.

Into 1928 and 1929, findings began to accumulate political weight. The new regime, still consolidating authority, found in the reports a useful narrative of republican incompetence. The fraud became evidence of broader failures in the parliamentary system that military force had overthrown. Yet this political utility contained risks. Detailed documentation of institutional failure reflected poorly on Portuguese financial administration generally, at a moment when the government sought international confidence and investment. The commission balanced exposure against reputation, producing enough detail to justify reform without so much as to suggest permanent incapacity.

Reis himself presented another challenge. His criminal trial concluded in May 1930 with a sentence of twenty years. The commission’s work was not directly concerned with his guilt, which the criminal court had established. But testimony from Reis and his accomplices provided essential material for understanding how the fraud had operated. Transcripts and deposition records were reviewed, extracting information about logistics of the scheme and responses of bank officials. Reis’s claims about communications with Rodrigues required particular care. The forger had every incentive to exaggerate contacts with the governor, suggesting his scheme had enjoyed high-level protection or at least awareness. Claims were assessed against documentary record, finding what corroboration existed and noting where Reis’s account stood alone.

Final reports, likely completed around 1929-1930, represented the state’s definitive account. Scale of unauthorized issue was established—at a point, Reis had duplicated 100 million escudos, a figure verified through analysis of note registers. Distribution through Banco Angola e Metrópole and subsequent circulation through the Portuguese economy was documented. Use of proceeds to acquire Angolan enterprises and, most strikingly, a controlling stake in the Bank of Portugal itself was traced. The circularity of this arrangement—fraudulent currency used to purchase influence over the institution that should have prevented it—appeared as both technical finding and moral symbol.

Conclusions about governance were necessarily more guarded than findings of fact. Investigators could document procedural failures; patterns of inadequate verification could be established; concentrations of authority that allowed decisions to go unchallenged could be noted. Within their mandate, political relationships that might explain why such failures had persisted could not be fully explored. The question of willful blindness—whether officials had chosen not to see what they might have seen—hovered at the edge of analysis without being fully engaged. The prudence of investigators working under a new regime that valued order and control, and that had its own reasons for managing the scandal’s political fallout, shaped what could be said.

Yet the factual record they created could not be fully contained by these interpretive limits. Documentation of Camacho Rodrigues’s position, his awareness, his decisions, remained available for subsequent use. Materials were provided from which political opponents, or simply those seeking accountability, could construct more pointed accusations. The governor’s survival in office depended increasingly on regime forbearance and absence of alternative leadership. Detailed exposure of his institution’s failures made that forbearance appear increasingly like protection.

As English courts moved toward their own conclusions, the relationship between commission findings and London litigation evolved. Bank of Portugal lawyers drew on Portuguese reports to establish fact and scale of fraud, authenticity of notes, and the bank’s own victimization. Waterlow’s defense used the same materials to argue that verification failures had contributed to losses. Careful construction of a narrative balancing these competing imperatives—enough failure to explain the fraud, not so much as to absolve the printer—was tested in adversarial setting. The House of Lords would eventually rule Waterlow liable, but the bank’s own negligence would affect the measure of damages. The commission’s work had prepared this ground without determining its outcome.

By 1930, when Reis began his prison sentence and final reports were being compiled, the commission had accomplished its primary task. An authoritative account of the largest banknote fraud on record had been produced, grounded in the bank’s own documentation and verified through painstaking analysis. Mechanics by which a forged contract and forged letters had persuaded a London printer to produce genuine currency for unauthorized use were established. The path of that currency through the Portuguese financial system was traced, and its conversion into economic and political power documented. Questions of oversight and vigilance reaching to the highest levels of the Bank of Portugal were exposed, if not fully resolved.

The institutional corrosion that the commission documented was now a matter of official record. Procedures that had failed, verifications that had been skipped, warnings that had been inadequately heeded—all were preserved in volumes that could not be easily ignored. The new regime had sponsored this exposure for its own purposes, to distinguish its competence from republican failure. But the record created its own momentum. Each documented gap in control, each instance of formal compliance masking substantive neglect, added to the weight pressing on those who had presided over the institution. The commission’s definitive findings had been delivered. An inescapable record of institutional failure hung over the Governor’s head, and the demand for reckoning could not be postponed indefinitely.