Remnant printer's mark on the Joe Doyle card (center)....after the 1st printing plate erasure of the "Nat'L" lettering on the error card. The caption in the rightmost
card is clean. The majority of the Joe Doyle cards have a clean caption as this one. My sampling of 200+ different Joe Doyle cards over the past 6 years indicates
that approx. 8 % of the Joe Doyle cards have this printer's mark. And, I expect that a larger sampling will eventually yield even a smaller number than 8 %.
........................ PIEDMONT 350 (only) ............................................... PIEDMONT 350 .......................................... SOVEREIGN 350
............................................../\................................................. ......................./\
TED Z