India - Sultans of Bengal - Chittagong Region Trade Coinage - AR tanka (9.25 g.), anonymous i.n.o. of the four Caliphs, subsidiary series struck at Ramu mint, probably struck after AH960 (1553) (G/G B1007; MBLA285; ZENO293743) - Obv: Kalima / Rev: shah abu bakr murtada shah 'umar al-faruq shah 'uthman al-'affan shah 'ali al-radi allah - Extremely Rare, VF