Vintage Cobalt Blue Bromo-Seltzer Advertising Glass.
This type of glass was used in drug stores to serve Bromo-Seltzer, a brand of antacid originally formulated to relieve pain associated with heartburn, upset stomach, or acid indigestion.
The "BROMO-SELTZER" text is stencilled or pyro-glazed on one side, and a water line for accurate dosing is typically found on the back. Bromo-Seltzer crystals would be measured into the glass, and then water was added to the designated line to ensure the correct dose.
In good condition with no chips or cracks. Tiny fleabite on the rim.
Measures: 4-7/8”h