France (Pau mint), ecu, Louis XV, 1756/5, mintmark cow, unlisted overdate. KM-unl (518 for type). 27.62 grams. VF details with minimal surface corrosion but scratches on bust, spotty toning, scarce issue and with clear overdate that is unlisted in KM. With original (generic) certificate from the salvagers. Recovered from: Auguste, sunk in 1761 off Nova Scotia, Canada (Estimate: $125 - 200)