💜 Vintage PENSLAR Detroit Embossed Irradiated Manganese Glass Medicine Bottle

This antique embossed PENSLAR Detroit medicine bottle is an attractive example of early 20th-century pharmacy advertising glass. Originally manufactured in clear manganese glass, it has developed a rich purple color after decades of UV exposure or later irradiation, making it a striking display piece for collectors.

The front is beautifully embossed with "Penslar Detroit" in flowing script, while the base bears the Illinois Glass Company Diamond-I maker's mark, dating the bottle to approximately 1915–1929.

📏 Measurements:

• Height: 4⅝ inches

• Width: 2 inches

• Thickness: 1⅛ inches

🏺 Details:

• Embossed "Penslar Detroit" on front

• Diamond-I Illinois Glass Company maker's mark on base

• Machine-made

• Originally clear manganese glass

• Deep irradiated purple color

• Estimated production: circa 1915–1929

🔎 Research Notes:

• Penslar was a well-known Detroit pharmaceutical company whose products were sold through Penslar drug stores across the United States.

• Extensive research identified larger documented Penslar bottle variants, but this exact 4⅝-inch embossed version could not be matched to published collector references or online sales records at the time of listing.

• The bottle was likely produced by Illinois Glass as a stock medicine bottle with custom Penslar embossing.

✅ Condition:

• No chips observed

• No cracks observed

• Crisp embossing

• Displays beautifully with rich purple coloration

• Please review all photos as they are part of the description.

A wonderful addition to any antique bottle, pharmacy, advertising, or irradiated manganese glass collection.