Super vintage art deco buttons from the 1940s-50s made of an early type of plastic, probably casein.
A classy dark olive green with an integral shank and measuring 18mm.
These are (partly) still on their original card, which says they are washable, iron-proof and made in England.
Unused, but with some light wear from their time in storage.
Priced in sets of six - half of the card.