24 vintage glass buttons on their original shop display card. They were made in Czechoslovakia in the 1930s (label on the boxes) There's a complex typically geometric Deco pattern etched onto the outer rim of the button. The centre is domed and the buttons shimmer as they move and reflect colours and shapes around them. They are 1.5cm in diameter and have a shank also made of glass. I found these in an old button warehouse. Some of the cards have age spots from long years in storage.