I'm selling a lovely 50mm Zeiss Superspeed mkII for Super16. I have tested it on a Sony F3 and it does cover that sensor also!
This is the hardest to find of the Super Speeds. The 9,5mm-25mm are more common individually and in kits.
Condition is great for its age. Some paint loss on the barrel and some traces from mounting on the very edge of the back element. Focus and iris is really smooth. Lens was checked for collimation last year.
Here's a test I did with the lens a couple of years ago:
Located in Sweden but I will ship worldwide (but Europe preferred).
Price is 1400€.