Turkey, Mustafa III. Silver Piastre Coin, dated 1760.

Turkey, Mustafa III. Large Silver Piastre Coin, dated 1760 AD (1757 AD + 3 / AH 1171 + 3)

Obverse: Mint formula and accession date (1171), regnal year (3) above.
Reverse: State seal (Tughra) of the Sultan of the Ottoman Empire Mustafa III.

References: KM-320.
Minted at Islambol mint (Constantinople)
Weight: 18.63 gm
Diameter: 38 mm