Delhi Sultanate, Ghiyath ud-din Balban (AH 664-686/1266-1287 AD), Hadrat Delhi Mint, Silver Tanka, AH 666 (fancy date), Obv: al-sultan al A'zam Ghiyath ud dunya wa'l din Abu'l Muzaffar Balban al-sultan, Rev: al imam al must'asim amir al mominin, mint name in the margin, 10.9g, 30.00mm, (G&G # D157), about extremely fine