I have a Nikkor-O 35mm f/2 non-AI lens in excellent condition that I'd like to trade for a Canon FD 35mm f/2.
Specifically looking for the concave front-element, thorium lens, old-FD mount. Chrome-nose would be awesome.
If there's a slight differential in value, we can work that out. Please send me a PM if you have interest.
p.s. pictures available here (post #2)