antique mother of pearl shell button lot, large buttons several styles, vintage sewing notion

Lot of large natural shell buttons, most of these just under 1" diameter. There's several different styles here or mix or match. The whole lot is shown altogether in the first photo.

They're roughly 1920s vintage, maybe a little earlier or later. They've been in a brown paper envelope in the bottom of an old sewing work box for about 100 years!