G-Claron 210 Dagor in Barrel
I wanted this because it is a Dagor type with lots of movement and a mostly round aperture for a Vintage Style look. Now it does have it's issues, a little edge separation is visible in the photos as well as what appear to be some coating blemishes. But, it's still a fun lens and I've even used it on an SL66 with the Copal 1 cut body cap listed separately. It comes with the retaining ring.
I am not sure what to ask for it but $150.00 + ship seems like a good place to start.