VTG 30s-50s Casein Plastic Shank Buttons Set of 2 Brown Relief – 1 1/8” Diameter

Description:

Set of 2 vintage 1930s-1950s casein plastic shank buttons with a textured relief pattern and a rich brown and black marbled design. These buttons have a sturdy, dense feel and a slightly glossy finish.

Details:

• Material: Believe these to be Casein plastic
• Size: 1 1/8 inch (28mm) diameter
• Color: Brown with black relief accents
• Shape: Round with textured front
• Back Type: Shank
• Era: Approximate these from 1930s-1950s
• Condition: Vintage with minor wear, no major damage

Identification:

• Sinks in water (dense, early plastic)
• Fluoresces under UV light (consistent with casein plastic)
• Mild odor in hot water test (classic casein reaction)
  
  (T-4)