15/16" with rim hole as made. Names of each candidate and 1860 date on each side. Both ferrotype images are exceptionally bright and clean with emulsion surfaces approaching 100% perfection with the only exception being a 1/16" emulsion bubble on the bkg. to the left of Breckenridge's chin but the emulsion remains totally intact so it merely catches reflected light but causes no further problem. Superb quality and ferrotypes for these candidates are the scarcest among the 4 contending 1860 presidential candidates.