I have for sale a Pentacon 200mm f4 constant aperture Bokeh Monster lens in M42 screw thread.

I have given it a light service and the elements are so clear and bright with.    The photo show a true reflection of the lens.

Its a beautifully sharp example of this particular lens.  The elements are so nice looking.   

No fungus, no cracks and damages 

The 15 aperture blades are legendary.
The focusing barrel turns end to end smooth and steady.
The aperture ring lifts and turns just as it should.
The 15 aperture blades are dry, clean and snappy.

The lens is incredibly sharp at f4 and I don't think I need to mention about the bokeh! Hehe

The first photo was shot at f4 and shows you the bokeh balls (traffic lights)

The second shot at f8 was my next door neighbours tree

The third shot at f16 was of the house across the road.  Just look at the sharpness, even when handheld and ISO pumped up a bit.

All shots performed handheld on my Fuji Xpro1  with standard M42 adapter which makes the above 200mm telephoto lens, nearer to a 300mm equivalent!
The lens come with a rear lens cap and a front lens cap.

I HAVE OTHER VINTAGE M42 LENSES FOR SALE IN MY EBAY STORE AND MY SPECIALIST AREA IS THE LEGENDARY HELIOS 44-2