Gibraltar
WORLD COINS, Gibraltar, Authority untraced, Ismail b. el-Sharif, a Morocco Bunduqi, countermarked ia key raised within a shaped indent, 3.36g/51.9gr (Lyall, SNC September 2009, p.161, this coin listed; ICV 3036). Coin very fine, countermark better, extremely rare £2,000-3,000
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Provenance: L. Adams Collection, Part III, CNG Triton Auction XIX, 6 January 2016, lot 2375 [from M.L. Teller November 1988]
The countermark is perhaps by Isaac Abrams, a prominent merchant