Hake McKinley #302. 1.25" litho with vertical pin on the reverse. Front depicts U.S. Capitol with a window cut out below and an interior metal panel reading "Here He Is." At the top, a 'steeple' is pushed to make either McKinley or Bryan photo appear in the window. Text on the reverse explains "Oh Stop Guessing! Presidential Problem Solved. Hold Button So Capitol Is Upright. Press Steeple And Candidate Appearing Most Is A Sure Winner. Inclining Capitol Slightly To Either Side, One Of The Candidates Will Appear Mostly. Elect Your Choice. Lock Steeple And Wear As A Campaign Button." Reverse has just 4 tiny paint dots off, one just 1/16" and the others even smaller. On the front the left lower roof edge has 1/16" paint dot off partially covered by a tiny added dot of black paint. This degree of paint loss is extremely minor and this example is overall in Exc. condition and among the nicest we've seen as the piece is so susceptible to flaking. Working perfectly. Almost certainly the very first litho tin mechanical button. Scarce.