1.5”. Hake #36 with lightly aged back paper from Gowdy, Coldwater, Michigan. Extremely attractive design with their real photos in ovals while above is the Capitol dome along with faint sunburst rays to the left and right. In reflected light a couple of small 1/8” scratches show as well as a 1” long hairline but it is very light barely marking the surface and seen only from certain angles. The button has perfect centering and full gloss. A rarely offered and very striking design.