Authors: David C. Harper

  • 2015 North American Coins and Prices A Guide to U. S. , Canadian and Mexican Coins — David C. Harper

    2015 North American Coins and Prices A Guide to U. S. , Canadian and Mexican Coins — David C. Harper

  • 2020 U.S. Coin Digest The Complete Guide to Current Market Values — David C. Harper

    2020 U.S. Coin Digest The Complete Guide to Current Market Values — David C. Harper