I heard about nipple buttons and thought they looked familiar and I thought I might have found some...so I started sorting my buttons today. No nipples BUT I did find a Barber dime, Connecticut CW era button, my Phoenix Haitian 1810-1820 military button, my 1880 Garfield and Arthur campaign button, a cut copper, a few 1600s pewter buttons, and a slew of buttons with cloth still on them.