Unusual vintage/antique glass buttons. These are clear glass with a green and white stripe and a blue dot inside the glass, laid over a sparkly gold background - looks like gold foil inside the glass. At first glance they could be 20th century studio glass, but the shank is a four-way box shank with thread grooves which would indicate an earlier date. So a bit of a mystery to me, but very pretty and nice quality.

Size 11/16” (1.7 cm)