1757, Royal France, Louis XV. Large Silver Ecu Dollar Coin. Paris mint! Mint year: 1757 Denomination: Ecu Mint Place: Paris (A) References: Davenport 1331, Douplessy 1680, KM-512.1. Weight: 29.02gm Diameter: 42mm Material: Silver Obverse: Head of Louis XV left, with bound long hair. Privy mark (heron) below. Legend: LUD . XV . D . G . FR . ET . NAV . REX . Reverse: Crowned oval arms ...