1892-O Micro O Barber Half Dollar Coin
Artist and Numismatist Augustus Heaton published his “Treatise on the Coinage of the United States Branch Mints” in 1893. This was the landmark book that inspired collectors to consider mint marks as varieties worth collecting. Nineteenth century numismatists had previously paid little attention to mint marks. In his book, Heaton states (concerning the 1892 New Orleans Mint half dollar),...
