Sears Auto Sears MC 80-200mm F:4 Pentax K Mount Push-Pull Zoom Lens 

Lens made in Japan by Cosina Camera and Optical for Sears Co and sold thought Sears store in the 1980s and 90s. Lens was designed to fit the new Sears KS Pentax mount cameras from the M42 mount that had been phased out of production worldwide.