The Standard Directory of Proof Marks with WW II German Ordnance Codes
Wirnsberger, Gerhard (Steindler, R.A., translator)
195 pages. The length of the spine is creased, as is the front cover, though much less so; the front and back covers both carry an ownership stamp. Internally the book is clean, unmarked and solid. "Excellent Reference book for someone researching proof marks. Lots of historical information on the proofing guns in Europe" (web review)
Published 1975 Jolex in cooperation with the John Olson Company Paramus, New Jersey