30 celebrate the century US stamps Unused postage sheets 3182-3191
There's one complete set of 10 which you're still in their packs. There's another set from 1900 to 1980. Still in the pack so it's missing 1990. There's 11 other sheets. That's 1910 and the other ones are 1900, 1910, 1920, 1920, 1940, 1950, 1960, 1970, 1980, 1990 (not in packs). The ones that are not in packs look like they're clean but you can tell they've been handled and one of them the bottom is cut off. I guess when the person was opening the pack up I took a picture to show that. Total of 30 sheets in and out of the pack.