I made a great bargain and now have got a new/old M42 lens: Porst Color Reflex 55mm f1.4 Auto.

2011-06-20 roommate ©

55mm | 1/125s | f1.4 | ©

The lens itself looks like this:

2011-06-20 Porst Color Reflex Auto 55mm f1.4

70mm | 1/13s | f4.5