1.25" with union bug and copyright of Underwood & Underwood on lower edge. Listed as Hake #4 with 2004 Revised Prices value of $853.00 although the last sales record we could find for this button was at $1160.00. This is a gorgeous example. On far right rim there is an exceedingly faint .25" vertical line which is just a little faint black color under the celluloid as printed. The button has perfect centering and exceptionally high gloss and an exceptional lack of surface wear even under magnification. Typical surface oxidation on the metal reverse which also includes a union bug. High grade example, N. Mint, displaying Mint.