I'm on the market for a Rodagon-G 50mm lens in good condition. I'm looking to create some 24"x20" and bigger enlargements from 35mm film. Please let me know if you have one available for sale and how much you'd want for it.
The last one I had I sold for I think about $350. One recently closed on ebay for $600+ (crazy, IMMSHO). Also consider the Apo Rodagon N 45mm. It is rated for large enlargement ratios also. 20x24 from 35mm is only 20x, just on the low-end of the Rodagon-G range.