1.75". No maker. Button has photo showing 19 team members in uniform, including batboys/mascots and manager who wears a suit and is seated at center. Ribbon attached at collet is 5" long and noted date of event, June 12, along with teams "Sioux City" Indians and "Denver" Bears and "Auspices Denver Chamber Of Commerce." Denver finished first this season with a record of 104-62. Back of button has piece of a second white ribbon that was originally attache but is now missing. This could have well been just a blank color accent ribbon, sans text. Lt. ribbon wear. Button has trace of surface wear upon magnification. Still glossy and with great team image. VF. Paul Muchinsky Collection.