AO American Optical Microscope Darkfield Condenser 1.15 to 1.25 SL. TH. w. Case
The front of the lens reads: 1.15 to 1.25 SL. One of the centering screws is slightly bent but still screws in/out.
AO American Optical Microscope Darkfield Condenser 1.15 to 1.25 SL. TH. w. Case
See photos this is in good use condition. The outside of the box does show dirt and some writing on it, but the lens is in very good condition.