Sizes range from 1.25" to 2" and each has a pin on the reverse. The set begins with her first 1935 decoder. See the rare lead proof unique item related to this #1631. This decoder is missing silver luster from the outer edge with the circle of letters but otherwise condition remains Exc. Next is 1936 decoder with slide off secret compartment on reverse. Next is 1937 decoder with sun burst Art Deco design. Next is 1938 decoder with star and wreath design. Next is 1939 decoder with just slight luster loss from the outer edge. Last is the "U.S.A." decoder from 1940 with highly embossed eagle perched atop shield with flowing American flag in the bkg. All pieces have essentially NM to Mint luster with the two exceptions as noted.