Sweet vintage pearl buttons with self shanks. Sold in sets of 12 buttons.  I recently acquired these from an antiques dealer.  These tiny buttons have become almost impossible to find.   They measure 4mm in diameter and the shank measures 2mm. 

These buttons are almost impossible to get these days, so I wanted to keep them for my own use but I just have to share them. Once my stock is sold, they are gone forever.