2" tall stickpin holds diecut shield lithographed in rwb and inscribed "1888." The shield slides down to reveal a diecut sepia paper photo without dot pattern of Harrison. Paint on shield is missing seven near-pinpoint size dots that don't show at all unless catching reflected light. All is bright and clean including the photo which on some examples is subject to rubs from the sliding shield. One of the very first lithographed tin mechanicals. Exc.