Priceless treasures, thought lost forever, archaeologically recovered from the SS Republic Shipwreck, nearly 1700 feet below the surface! The 1854-O "Arrow Heads" Liberty Seated half dollar design was only produced for two years, in 1854 & 1855. The condition of these coins is incredible and the historic "O" mintmark, for New Orleans is still legible. Any coin struck in this era is scarce today - and those from the New Orleans Mint are especially hard to find.