SPENCER IMMERSION OIL BOTTLE:

c. 1900

Maker: Spencer Lens Co.

Model: Spencer Lens Co.'s Special Bottle and Dropper for Immersion oil

Although they called it Spencer Lens Co.'s Special Bottle, this bottle closely resembles the original Mach design of 1897. It features the innner cylinder design as well as the wire eyelet for dispensing the the oil.