Author: Crawforth, Michael A.
Title: Sovereign Balances : 1 : Standard Rockers
Description: Oxford, Published by the author, 1984. 2nd Edition. orig. wrappers. 21x15cm, 48 pages, 2nd edition, revised.. A removed-label mark to cover. Minor wear. VG. ¶ All published? No further volumes issued. "The English sovereign rocker was THE popular counterfeit coin detector of the 19th century

Keywords: Numismatics, Weights, Balances, Weighing, Instruments, Scales, Antique Scale, Metrology, Counterfeit Coins, Coin Detector