1 Rupee - Sher Shah Suri mintless type

Sher Shah Suri's rupee is arguably the most consequential coin in South Asian monetary history — the prototype from which the Mughal rupee, and eventually the British Indian rupee, descend directly. Sher Shah standardized weight and fineness across a fragmented subcontinent during his brief five-year reign after driving Humayun into Persian exile in 1540. The mintless designation indicates the issuing mint was not recorded on the die, a practice seen across several of his issues and which complicates attribution to specific production centers.