Check the listing for details. Antique Spencer Lens Company Petrographic Microscope - Early 1900s - Specialty. Listed at 100.00 USD. This unique antique Spencer Lens Company microscope, dating back to the early 1900s, is a petrographic model, distinguished by its specialized round stage and unique attachment. Unlike traditional microscopes with multiple objective lenses, this one is equipped with a specialty attachment in place of the classic nose and objectives, making it perfect for geological and petrographic studies. It is a rare and valuable addition for collectors of antique scientific instruments or those with an interest in vintage petrographic equipment. Features: Brand/Model: Spencer Lens Company Petrographic Microscope - Buffalo Year of Manufacture: Early 1900s Condition: Good antique condition with wear consistent with age and use. The optics and mechanical components are in working order, though minor cosmetic wear is visible. Specialty Attachment: Unique petrographic attachment instead of traditional nosepiece and objectives Round Stage: Specially designed for geological and petrographic use Materials: Metal body with a black finish Functionality: Fully operational focusing mechanism with clear optics Condition: As-is. Includes only what is shown in the pictures. This microscope shows wear consistent with its age. While the optics and mechanical components are functional, there may be minor cosmetic imperfections due to its antique status. Serial Number: 128468