Bengal Sultanate, Rukn-ud-din Kaikaus (AH 689-700/1290-1300 AD), Lakhnauti Mint, Silver Tanka, Struck From Land Tax of Bang, Obv: al-sultan al-a'zam rukn ud dunya wa'l din abu'l muzaffar kaikaus sultan bin sultan bin sultan, Rev: al-imam al musta'sim amir al mominin,mint name & hijri date in margin off flan,11.0g, 28.00mm, (G&G # B88), choice extremely fine, Scarce.

All the tankas were struck from the land-tax/khiraj of Bang. Bang, Bangla and Bengal are synonymys of the word Bang.

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