Set of four Nikon microscope "Epi" objectives, one each Epi5, Epi10, Epi20 and Epi40 as shown. All glass and coatings fine, very clear. Barrel cosmetics show some use, not mint. Thread meaure peak to peak 27.89mm so these would be classified as being 27mm. 

WHO WE ARE: Oddog2 is a husband/wife team, home-based small business specializing in the buying/refurbishment/selling of primarily photographic equipment. We do occasionally have other types of things to sell that come to us as a result of our search for camera-related items. We have over 50 years of experience with photographic equipment, both as a shooter (17 years newspaper photojournalist) and as a collector/restorer/seller. We have been on eBay as Oddog or Oddog2 since September 1999.