Preliminary identification
Photo reference
1 uploaded photo
Overview
This is a set of vibrant, double-walled insulated plastic tumblers featuring a stylized, gilded autumn leaf motif. Designed to keep drinks cold without sweating, these tumblers represent the height of post-war casual entertaining and the mid-century obsession with innovative plastics.
Story
In the 1960s, American backyards became the new living rooms. These tumblers were engineered to solve the 'sweating glass' problem at patio parties, combining space-age insulation with glamorous gold leaf graphics.
Maker / Origin
Originally developed by the West Bend Company and later produced under the Thermo-Serv brand in Minnesota, these vessels became staples of American suburban life. The company specialized in durable, colorful consumer plastics that brought modern convenience and cheerful aesthetics to everyday households.
Condition & Value
The tumblers appear bright with minimal fading, and the gold leaf graphics show very little of the typical scratching or rubbing. To maintain their value, these must never be put in a modern dishwasher, as heat can breach the thermal seal and cause cloudiness between the plastic walls.
Full Research
Sold comps, value drivers, and venue guidance pulled from recent auction results.
Build on this identification
Layer in sold comps, value drivers, and venue guidance.
Comparable demand stays strongest where maker, originality, and venue confidence line up. Broader examples still trade, but the range tightens quickly when provenance, condition, or selling lane fit is missing.
Best Venue
Specialty auction or a focused dealer with buyers already in this lane.
Signed example with light edge wear and original frame.
Comparable format with stronger provenance and cleaner surface.
Smaller related piece with visible craquelure and trimmed margins.
Period match with softer condition and weaker subject matter.
Close market lane comp with similar material and presentation.