Antique beer or soda bottle that's blown in mold, dates to about 1885-1900:
H. SWARTZ & CO./ 78-80 & 82 LEVERETT St./ BOSTON, MASS./ REGISTERED
Measures 9-1/8" tall, with a big, hand tooled blob, entrapped air bubbles, and very clean, bold embossing.
In excellent condition with just a few very light scuffs, otherwise fine.