Clock Identification and Price Guide by Roy Ehrhardt. This book contains carefully selected actual pages from original factory sales catalogs, factory advertisements, supply house catalogs, and sales brochures. It covers American and Imported clocks from 1850 to the 1940s. The following information is given for each watch: the year it was offered for sale, the factory description, the price for which it sold and a present retail value. The original antique and historic material has not been changed. 236 pages. Copyright 1977. Soft cover. Good condition. – Book 2,000