24  really unusual vintage buttons. They remind me of the 1950s  Sputnik graphics... 
They are made of plastic, have 2 holes in the centre and there are 24 of them on a display card and I have them in the 2 sizes shown.
The last 5 sheets of the 2cm size have 23 not 24 buttons.
So, if there are only 5 sheets left in the listing - you will get 23 buttons.
They were found in an old Button Warehouse