Glass Apothecary Bottle, 9 1/2 Inches, Magnes. USTA
This a wonderful 9 1/2 inch tall apothecary bottle labeled MAGNES. USTA. Magnes usta is magnesium oxide, which can be used medically as a laxative and antacid.
The ponti is visible on the bottom of the jar. The glass is in very nice condition, with no nicks or chips. c.1900 or earlier