This article considers the evidence for the business practices, goods traded, and accounts of the Dutch East India Company (VOC) upper merchant, Wilhelm Buschman, on Kharg Island in the Persian Gulf during the 1760s. Previous scholarship indicates that his widow, Anna Maria Pack, had a large inheritance, acquired on her death by her second husband, the VOC surgeon Ferdinand Dejean, who commissioned most of Mozart's flute works. A historical audit of Buschman's reports in this article reveals that the existence and source of most of that wealth was hidden from the official diaries which Buschman sent to the VOC headquarters in Batavia, on Java. The dwindling profits of the VOC, at a time of military turbulence involving Mir Mohanna, do not support Buschman's money originating from bribes even factoring in rake-offs. There is, however, evidence for a private, ring-fenced pearl trade on Kharg, which provides a good explanation. Pearls were not just jewels, but an ideal cryptocurrency for concealing, storing, selling, or shifting private wealth. The findings substantiate that it was possible for the VOC to lose out hugely to private enterprise, which was part of the culture among senior merchants. That wealth could do intercontinental economic damage. Occasionally, it was put to lasting good use.