1857-O Liberty Head Quarter Eagle. Winter-1, the only known dies. AU-55 (PCGS).Well struck by the standards of the issuing mint, this coin is overall boldly defined on the obverse and only a bit less so on the reverse. Warmly toned in honey-orange with a pleasingly smooth appearance in hand. Popular for mintmarked gold type purposes, the 1857-O is not only the final New Orleans Mint quarter eagle issue, but also one of the most readily obtainable of the Liberty Head design.