VTG 30s-50s Gray Two-Tone Plastic Sew-Through Buttons Set of 8 – 5/8” Diameter

Set of 8 vintage 1930s-1950s two-tone gray sew-through buttons made from an early thermoset plastic (likely Urea-formaldehyde). These buttons feature a raised rim design with subtle darker gray accents.

Details:

• Material: Thermoset plastic (likely Urea-formaldehyde)
• Size: 5/8 inch (16mm) diameter
• Color: Light gray with darker gray accents
• Shape: Round with a raised rim
• Back Type: Sew-through, 4-hole
• Era: 1930s-1950s
• Condition: Vintage with minor surface wear, no major flaws

Identification:

• Sinks in water (denser than modern plastics)
• Very mild fluorescence under UV light (consistent with Urea-formaldehyde)
• No reaction to hot water (rules out Casein)

(T-4)