1.8 or 1.3cm Soft White 1940s Glass Buttons

They have an integral glass shank on the back.
I have them in 2 sizes 

1.3cm - 12 on a sheet

1.8cm - 9 on a sheet

I have a big box of these so they are very cheap - you can replace all your boring plastic buttons, and all those of all your friends too for less than a takeaway pizza !