11/2 Pence Black Dog, T countermark on Cayenne colony 2 sous

During the late 18th and early 19th centuries, the British Virgin Islands suffered a chronic shortage of small change that colonial authorities addressed through the countermarking of foreign coins already in circulation. The Cayenne 2 sous — billon coinage struck for French Guiana — circulated widely across Caribbean trade routes, making it a practical candidate for official revaluation. A stamped "T" authorized by the Tortola colonial administration converted these French colonial pieces into locally sanctioned currency at 1½ pence.

The practice was not unique to Tortola, but the survival rate of correctly attributed examples is low — many countermarked Caribbean billon pieces of this period have been misidentified or the host coin origin misread entirely.