Ralph C Gordon. Published by Erik Press, 1987. HB (dark burgundy rexine with gilt-lettered front cover). 122 pages, illustrated throughout with b&w photographs. Cites the relevant legislation, lists the host coin(s). Has a bibliography, and estimated prices (1987), and an index to countermarks, including those of unknown origin. It is the standard reference work on the subject. No 51 of an edition of 500. No dj (as published). A tiny rub to top right corner, otherwise almost as new. Scarce.
We can find no trace of the Erik Press apart from this book. Does anyone have any information, please?