“Pearlised” Buttons were sold from the late 1940s to the late 1950s, when polyester buttons replaced them. Polyeaster gave the shimmery appearance without the powdered fish scale coating that could chip off.
Groovy Two-tone buttons
The dual pricing indicates these were sold from February 1966 until August 1967. The plastic button has a thin black layer over a white base, with a cut-away to show the white.
Astor shrink-wrapped buttons.
A clever way to do away with the need to sew buttons onto cards, or a environmental mistake?
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