The lens is an Olympus Zuiko Auto-S 50mm f/1.8 manual focus lens. The mount is clean and no obvious signs of corrosion, it sits fine on my Olympus and works as intended.
Olympus OM System Zuiko 28mm f/3.5 Lens OM Mount Clean Glass Read
[Top MINT w/ Case] Olympus OM-SYSTEM Zuiko Auto T 180mm f/2.8 MF Lens From JAPAN
CLA'd Late [TOP MINT] Olympus OM System Zuiko 100mm f/2 Lens From JAPAN
Olympus OM-System Zuiko Auto-Zoom 1:4 F=75-150mm Camera Lens (N13)
[MINT] Olympus OM-System Zuiko Auto-W 21mm f/3.5 MF Lens From JAPAN Fast Ships
[Near MINT] Olympus OM-System Zuiko Auto-T 200mm f/4 MF Lens From JAPAN
![[Top MINT w/ Case] Olympus OM-SYSTEM Zuiko Auto T 180mm f/2.8 MF Lens From JAPAN](https://images.buynet.work/thumb.php?i=367922621&s=240)
![CLA'd Late [TOP MINT] Olympus OM System Zuiko 100mm f/2 Lens From JAPAN](https://images.buynet.work/thumb.php?i=372763982&s=240)
![[MINT] Olympus OM-System Zuiko Auto-W 21mm f/3.5 MF Lens From JAPAN Fast Ships](https://images.buynet.work/thumb.php?i=372764475&s=240)
![[Near MINT] Olympus OM-System Zuiko Auto-T 200mm f/4 MF Lens From JAPAN](https://images.buynet.work/thumb.php?i=372764773&s=240)