This is Leica M mount lens. This is rare 2nd version 28mm f/2.8, #2316000. There is infinite lock.You can use this lens on the film M camera M2/M3/M4/M5/M6/M7 and digital camera M/M9/M8.There are a little signs of use. The glass is very clean, free of scratch, seperation and fungus. See the picture. It comes with both of front and rear plastic lens caps.
Please Check my other sellings on ebay!
Good luck and thank you for bidding.