Pentacon M42 30mm f3.5 preset lens, based on the Meyer Lydith. Tested on a DSLR with good results (adapter not included). The front element shows some cleaning marks to the coating, and there is some very minor fungus, however the test showed no soft spots or flare. The preset diaphragm works. There is a slightly disconcerting rattle, but as stated the lens works, so it's probably best ignored! Comes with its front cap. Serial number 7358039.
