This lens is the early version, which was sold from March 1971. It is made without the later introduced s.s.c.- compensation (super spectra coating). The lens weighs a 725 grams, has a 55mm filter diameter and a closest focusing distance of 2.5 meters.
Here you can see the lens adapted on my EOS-M. It has a permanently mounted retractable lens hood. The lens is very large compared to the tiny camera.
Unfortunately, the lens with maximum aperture unusable. The images are dull, lacks in contrast and sharpness. It is necessary to stop down to f/8.0. Then the photos are sharp, from one corner to the other. I can recommend to use a tripod, because 200mm focal length require a shutter speed of at least 1/200 second. Nevertheless, all here presented images are created freehand. This works only when there is sufficient light.
Conclusion: the lens is treated with about 30 to 40 euros. You should not pay more also. Better to use the later version of this lens with s.s.c. lens coating.
An alternative is for the 200mm lens on the Canon FD series with an aperture of 2.8 or even 1.8. However, these are by far more expensive and get very rare. A special lens in these series with excellent sharpness and brilliance in the picture quality is the Canon FD 200mm f/4.0 Macro.