I've got what appears to be a mostly complete 1968 Velo-Solex 3800 project that I'd like to sell. It needs the fuel tank and cover, and front brake pads for sure, but seems to be otherwise complete (I'm not too familiar with these but it looks like everything else is there). It appears to have very little use by the lack of scratches and wear on the motor-lever, tires, and roller. The engine turns over freely and it can be ridden like a bike as it is.
I'm asking $300 obo, shipping is available and should be less then $100 anywhere in the US (if disassembled), buyer will be responsible for actual shipping cost plus $25 for handling (disassembly and boxing).
Reply here and I'll send you an email.