Image #1
UNITED STATES
Modern Errors And Varieties
Lot #
216 | ** 
| Scott # 1501b
| 1973, Progress in Electronics, 8c multicolored, a single with tan (background) and lilac colors omitted, full OG, NH, VF, according to Scott Errors Cat. only 50 stamps are known to exist, C.v. $600 . |