Delhi Sultanate 

Sultan: Nasir ud Din Mahmud, (AH 644-664/ AD 1246-1266)

Mint: Hadrat Delhi Mint (off flan)

Denomination: Silver Tanka

Obv: ruler's titles within double square in circle; annulets in segments, ibn or bin in fourth line

Rev: fi 'ahd legends: caliph al- must' asim, within double square in circle; annulets in segments

Weight: 10.20g, Size: 27.00 mm,

Reference: G&G # D137

Condition: very fine.