bottle identification help - battery bottle?

Hi- no clue what this is. It is 8 inches tall, 4 7/8 inches in diameter


  • My guess is it's lab glass -- a reaction vessel with two necks. Some science labs employ a gaffer who may produce on order borosilicate glass implements and vessels for special uses.
  • Correct. This may have a polished pontil (hard to tell from photo) - likely 19th century. Bottles of the 19th c. were rarely made with clear glass but not the case for labware.
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