13/16" diameter, hole size 4mm, metal button with OM symbol. Shank back.
Re-Stocked Whirligig Silver 7/8" Button 4 Hole Large Size 23mm Open Spiral #SK-1129
Re-Stocked Whirligig Silver 13/16" Button 4 Hole Medium Size 20mm Open Spiral #SK-1130
Re-Stocked Whirligig Silver 5/8" Button 4 Hole Small Size 15mm Open Spiral #SK-1131
Almost Gone, Silver Kitty Cat Metal 3/4" Button #SWC-57
RUNNING LOW, Hibiscus Silver-Gray Metal Button 3/4" Shank Back #SWC-22