6 Sets of Vintage Buttons in Plastic and Glass, Plums and Grays

Six different sets of buttons in sizes ranging from 7/16" to 1-5/16".
The flat, shiny gray set is glass. All the other sets are molded plastic.
The large oval purple buttons (showing a bit too light in the photo) have an iridescent finish on the front side.
Very good condition, these do not look to have been used.
None of the buttons have been tested for bakelite.
Price is for all six sets.