Each is 1-3/8" litho with all four from the union "Division 241" and all for the month December. Buttons are dated for 1944, 1945, 1946 and 1947. Each button pictures a streetcar with the labor union initials on the side standing for Amalgamated Association Of Street And Electric Railway Car Employees Of America. The 1944 button has surface dents but paint remains largely intact although some gray tone on the white center area. The 1945 button is Exc. The 1946 button has numerous tiny white marks on the outer edge and a pair of .25" scratches. The 1947 button has only very minimal wear and is Exc. All are scarce.