Sizes are 2-1/8” to 3.5”. Earliest button is c. late 40s and promotes Spike Jones on RCA Victor records. There is a Twist button from the 60s. Next is psychedelic with text “The Kaleidoscope Is Turning On.” Next is big “Zappa” button. This has tiniest trace of spotting on the very lower edge but not very apparent. Other items include: Shadows Of Knight, Lena Horne, Bay City Rollers, Carly Simon, Grand Funk, The Impressions. All are Exc. to Mint except as noted. Many rarities.