The Tamron 200 mm f/ 3.5 Adaptall model CT-200 is a telephoto prime lens for 35 mm SLR cameras popular in the 1960-90s (via the interchangeable Adaptall / Adaptall-2 mount).
It is multicoated. It is equipped with a built-in hood.
There is an earlier rare version of the lens, which came in black and silver design. The key difference from the subsequent model is a 9-blade aperture and a tripod mount. The last four photos show this very version of the Tamron 200 mm f/ 3.5 Adaptall lens.