eBay

Vintage Sears Automatic Interchangeable Lens with original owner’s manual. Zoom lens 80–200mm f/4.5, manual focus, likely M42 or K-mount (please confirm mount before purchase). Great for collectors, vintage camera enthusiasts, or adapting to digital cameras.

Condition:

Lens appears in good cosmetic condition
Untested – sold as-is
Includes front lens cap and original instruction manual

Features:

Focal length: 80–200mm
Aperture: f/4.5
Manual focus
Original Sears documentation included

I cannot test this, as I do not have a working Canon camera. It does appear to be in good condition and has the original booklet with it. It also have both front and back lens covers.