Cleaning and Preservation of Coins and Medals by Gerhard Welter (1976-04-01) By Books / Hardcover Collecting › Coins Publisher: Sanford J Durst (1976-04-01), January 1976 Price $25.04 Free Shipping Send to a friend Used - Good (numismatic, coins, medals, paper money, preservation) [ISBN 0915262037] Inquire if you need further information. $25.04 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.