1858-O SS Republic Inscribed Seated Half Dollar NGC Shipwreck Effect Coin. Up for your consideration is a 1858-O SS Republic Inscribed Seated Liberty Half Dollar Authenticated by NGC as a Shipwreck Effect Coin. The coin appears to be a very lightly circulated example with an "X" inscribed into the field on the obverse. The SS Republic was a Civil War -Era sidewheel steamship that sank in 1865 while carrying a large cargo of silver and gold coins.He has contributed to numerous reference books within the industry, as well as being a co-author of The Comprehensive Catalog and History of Confederate Bonds, 2. He is an authorized submitter to NGC, PCGS, and PMG, a diamond founding member of Coin Dealers Helping Coin Dealers and a supporter of the Industry Council for Tangible Assets. American Coins and Collectibles can be found at many of the state and local coin shows. This item is in the category "Coins & Paper Money\Coins: US\Half Dollars\Seated Liberty (1839-91)". The seller is "coin4u" and is located in this country: US. This item can be shipped to United States.