Over the years I have handled a few "Takumar Bayonet" lenses for the pentax K mount. They all seemed to have terrible build quality, with a scraping sound as they focused or even disconnected mechanisms. I remember one lens (a 200mm zoom i think) was new in box, but still did not seem to work correctly. The box was labeled Takumar Bayonet and I think it was labeled Korea. I dont think it said pentax on it at all. Whats the story behind these lenses? Were these cheap knock-offs meant to mislead people into thinking they were pentax? Or just a 'first version' of pentax K mount lenses that were updated with better design in later years?