Hemingray No. 42 Glass Insulators
Hemingray Glass Company · Collectibles & Antiques > Communications & Industrial Utilitarian
Era / Decade
1920s to 1950s; specific marks 'MADE IN USA' suggest post-1930s production.
Material
Heavy pressed glass in 'Hemingray Blue' (Aqua). Includes characteristic 'drip points' along the bottom edge to shed water.
Condition
Very Good to Excellent. The glass appears clear with no large visible cracks or significant chips on the domes, though minor flea bites on drip points are common.
Demand Level
Moderate. These are common antiques but have a steady 'Niche' market for industrial farmhouse decor and glass hobbyists.
Resale Value
Estimated Resale Value
$15.00 - $35.00 for the set of three ($5 to $12 per unit depending on buyer location).
Estimated Retail Value
$5.00 - $10.00 each (original utility cost adjusted for inflation; no modern retail direct equivalent).
Comparable Sales
Single Hemingray 42 insulators typically sell for $4-$9 plus shipping on eBay. Sets of 3-5 often reach $20-$30 total. Cleaner glass without clouding fetches the higher end of the range.
Description
Set of three vintage Hemingray No. 42 glass telegraph/telephone insulators in iconic aqua blue. Features the 'HEMINGRAY-42' and 'MADE IN USA' embossing. These heavy glass pieces were used on electrical lines and now serve as popular industrial-chic decor, paperweights, or bookends. Dimensions: Approx 4 inches tall by 3.5 inches wide.
Key Features
High brand recognition among glass collectors; vibrant aqua color is the most popular for home decor; 'Drip Point' base design is historically significant.
Authenticity Indicators
Raised embossing with the correct font; weight of approximately 1.5lbs each; authentic aqua color consistency. High confidence level.
Flaws to Note
Look for 'flea bites' or jagged edges on the bottom drip points and internal 'stress lines' or bubbles. Roughness on the inner screw threads is common and usually acceptable.
Selling Guide
Where to Sell
eBay (broadest collector reach), Etsy (ideal for vintage home decor shoppers), or Facebook Marketplace (to avoid heavy shipping costs for glass).
Selling Tips
Photograph them with light passing through the glass to highlight the color. Use keywords like 'Industrial Decor', 'Telegraph Insulator', and 'Aqua Glass'. Ship with heavy padding as they are prone to impact cracks despite their thickness.