50mm f4.0 Schneider Componon, black (modern) version, 25mm mount with retaining ring, in excellent or better condition. This is a 6 element lens. Minimal dust, no haze/fungus/separation, operates smoothly, and no issues with glass. 10 day return privilege (less shipping) for you to inspect and test.
$18 plus actual shipping. For $10 additional, I can add a 25mm B-22 lensboard (only with the above Componon).
Can ship first class (at your risk) or priority (with tracking and insurance). Paypal OK.
Please PM or email rather than respond in the thread.