Missing Letters. The obliteration of letters or other detail during a long press run. There are two causes: a filled die, or heavy die polishing. Loose particles, scrap debris or metal lodged in a die cavity precluding the letter or detail from being fully struck up; in time the letter or detail disappears completely once filled. Also, dies are polished to remove some imperfection, as clash marks, and detail is removed by die retooling. Thus letters, figures, mintmarks, monograms and small portions of the design have been known to disappear on struck pieces. See filled die.
excerpted with permission from
For Artists, Makers, Collectors and Curators
COMPILED AND WRITTEN BY D. WAYNE JOHNSON
Roger W. Burdette, Editor