Better than average old school Konica Hexanon 135mm f3.5 telephoto lens in fixed manual focus Konica AR mount, serial number 5517716, made in Japan. 

Note this is NOT for current Konica or Konica/Minolta products, it's for old school Konica 35mm film SLR cameras like the Autoreflex series. Commonly used today with an aftermarket adapter on mirrorless D-SLR cameras (adapter not included). 

Glass fine, no issues. No separation, no fungus, no cleaning marks/scratches of note, no fog. As with any older lens like this you are bound to find a few bits of dust and a microscopic wipe mark on the coatings but nothing that will affect the taken image. 

Note we didn't control the reflections in our photos very well, the front element shows some of our studio!

Aperture leaves free of oil, operate as they should. 

Focus and aperture rings move smoothly as they should. 

Cosmetics excellent as you can see, but not mint. 

If you're looking for a nice example of one of these lenses plese consider this one. 

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 47 years of experience (22 years as a hobby, 25 as a full time effort) 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.