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🥤 An authentic piece of early American diet soda and regional bottling history.

This original Diet Frostie Root Beer bottle cap dates to the early 1960s and was produced for regional distribution by American Products Bottling Co. of Worcester, Massachusetts, operating under license from the Frostie Beverage Company, founded in 1939 in Catonsville, Maryland.

This cap is New Old Stock (NOS) — unused, never crimped onto a bottle, and preserved from original bottler inventory. The cork liner remains intact, a condition rarely seen on bottle caps that were normally sealed onto bottles and discarded after opening.

Unlike standard Frostie Root Beer, Diet Frostie was not bottled nationwide. During the early years of low‑calorie soda experimentation, individual bottlers decided whether to produce diet versions for their local markets. Many regions never adopted it at all. This cap exists because a New England bottler chose to participate in that early shift.

The printed “1 calorie per 6 oz serving” text reflects early nutritional marketing, long before modern artificial sweeteners and national diet branding became common. At the time, diet beverages were still a novelty, produced in limited regional runs and aimed at adult consumers.

This example combines classic Frostie branding with New England bottling history, offering a clear look at how regional soda producers experimented with changing tastes during the postwar era.

• 📍 Bottler: American Products Bottling Co. (Worcester, Massachusetts)
• 📅 Era: Early 1960s
• 📦 Condition: New Old Stock (NOS), unused
• 🥤 Product: Diet Frostie Root Beer

Ideal for display, framing, or adding to a broader soda or regional bottling collection.