Three Antique Drum Microscope Lenses. Circa 1850

Set of three antique lenses for drum microscope, in good condition and ready to use. The lenses are dated in the mid 19th century (circa 1850) and mount brass body with original ancient magnifying glasses. The brass is well preserved: its surface looks shiny and boasts the fine patina provided by the trace of time and the use. Each lens bears an engraved number: 4, 5 and 6 respectively. The three lenses can be easily adapted to an antique drum microscope so it can be used to watch samples and preparations. Original and very special, these three antique lenses with brass bodies are the essential accessory for a fine old-period drum microscope.