UNCdoormatt- the bottle is a bromo seltzer bottle made by the emerson bottling company. while beautiful in appearance they are quite common. they sell in Baltimore antique and knick nack stores for 1-3 dollars. when I was a kid I dug um by the tens....they are neat looking though. aloha Johny mc.
Sorry, no great value....10 bucks or less at most any antique store, though the cobalt blue is very collectible and looks good on any shelf or in a collection....No grouping of old bottles is complete without a bromoseltzer bottle....
Bromoseltzer and Alkaseltzer are two different products. My Grandad use to keep both on hand. Now I know where I got my penchant for terminal heartburn! Monty