Button, antique copper-plated "pewter" (zinc-based alloy), 15mm single-sided flat round with geometric design. Sold per pkg of 20. - Fire Mountain Gems and Beads
10 Pack Antique Copper 10 mm Spring Button Glove Snaps 1249-10 - Stecksstore
classic brass buttons – Quince & Co.
Reproduction Finnish copper Coat of Arms button – Tiera Reproductions
Amazon.com: Bezelry 12 Pieces Green Cyan Antique Copper Clover Metal Shank Buttons. (15mm) (19/32 inch)
6 PCS-8 PCS Metal Ancient Copper Button,shank Jewelry Vintage Buttons,coat Sweater Clothing Leather Wrap Clasps Buttons-15mm/20mm5657 - Etsy
Funnel Shaped Antique Copper Metal Hole Buttons - 20mm - 3/4 inch