Used Nikon CF Plan 50X Microscope Objective Infinity Corrected Bright Darkfield
A used Nikon microscope objective, never used it as the microscope I had in mind was never bought. Looks to be in good condition please see pictures. This lens appears to have a 25mm thread fitting so it is probably not suitable for microscopes that take the standard RMS thread. Hopefully the information on the picturs of the lens will be enough but I'll include them here. Nikon JAPAN 50X/0.80 WD 0.54 CF PLAN 50X/0.8 infinity symbol/0 BD.
A real chunk of a lens probably cost a fortune new when available. Can't use it probably will never be able to do so ether, hence the listing.