This series of 3 buttons are domed with rim. The rim increases with the size. The largest size is 100 L, it is 7/8″and a favorite with seamstress’s for this period. price 1 to 12 @ .92 each, 13 to 144 @ .84 each and over a gross (144) .74 each.
Matching buttons are 108 S F and 109 F/m. This is also good for possible bags and shoulder straps.