Many of the 18th century buttons made of natural materials did not have pierced holes, but were stitched on through a pin shank. A metal shank runs from the center top of the button, through the button, and then is formed into a loop for sewing the button to the garment.
We have recently obtained these buttons in 3/4" size, in a smoky grey, iridescent shell material. We also have a limited number available in 1/2" size, which would be a wonderful accent for a boy's waistcoat.
The pin shank buttons sell for $1.50 each.