Leitz microscope objective, Phaco, x16, 0.4, 170/-

This is a very high quality phase-contrast lens, NPL; x16 is a rare lens, 10 and 40 are more common. I am selling a duplicate set, because I thought I'd lost three nosepieces of objectives, but found them - after replacing them (I've kept the x25, as I find it more useful than the x16 for protozoa!)!