Anybody wants a Pentax Takumar lenses brochure? I got that hanging around somewhere in my bookshelf.

In M42, you could go from 17mm fisheye to 1000mm Big-Macho-Tele, with everything in between. That's:

17, 20, 24, 28, 35 (f/2 & f/3.5), 50, 55, 85, 105, 120, 135, 150, 200, 300, 400, 500, and 1000.

Add to this the 50mm Macro, the 100mm Bellows (focuses from infinity to damn close on a bellows unit), some zooms, and two Ultra-Achromatic taks (85 and 300; focusing both infrared, visible, and UV light equally).