1 Zequin Isaac Abrams countermark

Isaac Abrams was a Gibraltar-based Jewish merchant authorized by the colonial administration to countermark Spanish and Portuguese gold coinage for local circulation — one of the more unusual delegations of monetary authority in British colonial history. The "Zequin" designation derives from the Venetian zecchino, a term that had migrated into Sephardic mercantile vocabulary across the Mediterranean and was commonly applied to any small gold piece of roughly that weight class. Gibraltar's chronic shortage of official coinage throughout the eighteenth century forced the garrison and civilian population to rely heavily on foreign gold countermarked by licensed private individuals.