Sultans of Bengal, 'Ala al-Din "Bibban" (1531-32), Tanka, 10.42g, Husainabad, AH 938 (G&G B868, plate coin), believed to be unique, about extremely fine.
Provenance
John Deyell collection
Goron and Goenka list this coin under 'Ala al-Din "Bibban" but also note that the inscription could be a misreading of Firuz, meaning the Tanka could be an issue of Firuz II.
Estimate: £3,000 - £4,000