Group of vintage button cards partially full of white buttons from when the cards had fun designs.  I don't know what they are made of, but each card feels heavier than plastic.  Bluebird and Lucky Day buttons are corroded or dirty.  Mermaid Pearls buttons are incomplete but in good condition, as are the Costumakers.  Sizes include 1/4, 1/2, 3/4, 3/8, 5/8 inches.  Great for mixed media crafts and sewing.