1.25" with superb color and outstanding design depicting the "Official Seal" of "Sgt. Preston Of The Yukon." Very bottom edge of button and lower right edge have narrow 1.5" thin line where the white has just the faintest trace of tan toning to it. This line is hardly noticeable in most light angles and is mentioned only for full accuracy. The entire button displays beautifully with intense color, perfect centering and exceptionally high gloss. The little bit of surface wear there is shows only with magnification. About fifth we've seen. Sales have exceeded $800. Displays NM.