Sizes are 7/8" to 3.5". Row 1 #1 is earliest dated button from 1929 Truck Corp. One small raised dot caused by reverse pin as made. Row 1 #3 is from their New York World's Fair 1939 exhibit and #4 is from WWII. #6 names Oshawak Truck/Canada. #7-8-9 are employee badges each showing logo of Pontiac, Buick, Oldsmobile. We estimate these as 1940 but they could be early post-WWII. #10 is dated for 1936. Row 2 #1 is a pocket mirror, c. 1930s. All other items are buttons except Row 4 #4 is plastic designed as an Olympic medal for 1984 Los Angeles conference with back naming: Buick, Cadillac, Chevrolet, Oldsmobile, Pontiac, GM Canada. Vast majority Exc. to Mint. Many scarce to rare.