2-1/8" with just a trace of age on the W&H back paper. Front has tiny 1/16" indent line on extreme edge at 2 o'clock and in reflected light there is a light 1" vertical scratch running along his hair and ear at the left. Both defects are very minimal and the button displays beautifully and quite impressively due to its uncommon large size. Perfect centering, high gloss, no stain. See Taft mate #276.