Tipu Sultan, Silver Double Rupee, 22.85g, Patan Mint, AM 1216 Sara / RY 6 Sara, Obv: Persian legend “Muhammad Ahmad din dar Jahn Ast Raushan ze fatah haidar haidari he zarb Pattan saal i sara sanah 1216”, Rev: Persian legend “Huwa as sultan al waheed al adil tarikh i julus saal sakh seum bahari sanah 6 julus” (KM# 127a). Extremely fine, extremely rare.