Canon's generic 200mm f/4 — likely FD mount telephoto prime for film photography.
The Canon 200mm f/4 without specific mount designation is likely a Canon FD-mount telephoto prime — the 200mm f/4 was a standard telephoto option across Canon's FD system. Verify mount type on any purchase.
Optically adequate for its era — 200mm provides useful telephoto reach for portraits and nature at moderate f/4 speed. Manual focus. The FD 200mm f/4 was a common consumer telephoto. Check for specific version.
Likely Canon FD mount — verify. 200mm at f/4. Manual focus. The 200mm telephoto was a standard focal length in the film era. Adapts to mirrorless if FD mount.
Available used for almost nothing. Verify mount — likely FD. The 200mm f/4 provides basic telephoto reach. For FD film users or mirrorless adapter enthusiasts. Check condition.