1.25” with no maker name or back paper. Surface has been somewhat flattened and reverse collet has pair 1/16” indents. In spite of the damage the piece displays Mint with just a few random small scattered marks in reflected light. The photo on this button is from the same series as Hake book items #208-209 the first of which guides at $368.00 and the second guiding at $1,000.00. This design to us is equally rare and actually even more striking.