This listing features a  beautiful example of a Spencer Lens Company Monocular Microscope made in Buffalo, New York, 1920. It's serial number is 39828 and features a super durable cast-iron and brass frame with a marble examination table. This model became the gold standard of its day and was in widespread use from research laboratories to Universities. It stayed in use all the way until the 1950's. 

Condition - Excellent cosmetic and fully functional.