I have one of those. It was the very first SLR I bought back in '69 (?). It came equipped with a 55 mm f/1.8, and I quickly added a Vivitar 135 f/3.5 T-Mount lens to the kit. Well, the body, believe it or not, still works, though the meter is long dead. The lens aperture quit working long ago, but it still lives on as a makeshift loupe in the the darkroom. I had a good time with that camera, and still have the negatives and slides I made with it some 40 years later.