Olympus IMT Inverted Microscope Long working distance phase turret condenser with N.A. 0.55, working distance 20mm, With aperture isris diaphragm turret click stops for brightfield, 10X annuli, 20X annuli, 40X annuli, and 100X annuli. With slide-in auxiliary lens, IMT-LWD.  The unit is in perfect optical, mechanical, and cosmetic condition and will only fit, to my knowledge the IMT pictured. This condenser is new in original packing with a product number of 6-B756 and a last list price of $390.00. I will be happy to consider all offers. 

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