STANDARD DIRECTORY OF PROOF MARKS BY GERHARD WIRNSBERGER

Proof marks used in European countries. Chapters are organized so that each time period covered by a specific proof is contained within that chapter, establishing the approximate age of most European proofed guns is greatly facilitated. Hundreds of line drawings, charts, and indices make this book the most valuable proof mark reference for any collector. softcover. 196 pages – Softcover. Published in 1985.