7/8" reading "Booster Rebels 1915" done in a baseball design and with crossed bats below. That year the team finished third in the Federal League. About 1/32" inward from the very outer edge of the button the celluloid has a very slight surrounding circular indentation as made. On the upper left edge there is a 1/16" area with just the very slightest hairline break in the celluloid surface. This shows only as a extremely small and fine darker line and is hardly noticeable at all. All else is bright and clean although no backpaper. Button still displays Exc. Rare.