Antique 1900s Medicine / Druggist / Pharmacy Glass Apothecary Bottle

This bottle is believed to be from the 1900s. Likely a medicine bottle from a pharmacist/druggist, but what most people view as an apothecary glass bottle. 6.5" H x 2.5" L x 1" W. It's sole identifying mark is a raised "A1203" on the very bottom, which I believe is the glass bottle mold's identification number. No chips or cracks, but several bubbles inside the glass.