Sultans of Bengal, Rukn al-Din Barbak (AH 864-879; AD 1459-74), Tanka, 10.46g, AH 873, Barbakabad, darb al-sultan al-'adil al-a'zam barbakshah sultan ibn mahmud shah khallad allah mulkahu ...? rev. Kalima with mint and date below, both sides within circle and margin with decorations and wording, this type for Barbakabad not in G&G, a couple of shroff-marks and dark toning, attractive very fine, very rare
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