1.25” with lightly spotted rare backpaper from "M.C. Lilley, Columbus, O./Military & Society Goods/Uniforms.” Reverse once had fixed horizontal pin across the back but this is gone and a standard spring pin is it’s place. Front of the piece is totally clean and with full gloss but in reflected light there are four .25” craze lines across the bottom 25% of the button although these barely show even in reflected light and are really only noticeable under magnification. Shown as Hake #3154 with 2004 guide value of $600.00. A modest opening bid for a button that still displays beautifully.