Malwa Sultanate, Ala-ud-din Mahmud Shah I (AH 839-873/1436-1469 AD), Billon Tanka (3), 1/4 Tanka, 1/2 Tanka & Tanka, (G&G # M36, M37 & M38), 1.7g, 3.8g, 9.0g, 12.92mm, 15.83mm, 20.02mm, about very fine.