4 Plastic and rhinestone buttons beige vintage for sewing crafts jewelry hc2532

This is a loose lot of 4 matching plastic and rhinestone buttons. They look and feel like Bakelite in density but did not pass the test. They are unusually made and are quite old. The front beige plastic is backed with a lightler layer of plastic and they have bow shaped plastic shanks attached. They are 1 inch. Not all the rhinestones show as matching. Some look dark and others clear. Have no idea why this is so. Close up under magnification, they look to be this way from the factory. No stones are missing. These are old but can't be more definite as to age. I think these buttons would work in jewelry beautifully.
Please note that button purchases can be combined to save on shipping. At least 3 lots,often more, will go for the one shipping rate. I automatically give refunds when lots are combined.