Hi Jurgen. Good to hear from you. I hope all is well and that it is not too cold and snowy there in Germany this winter.
I nearly sold my CFV to a close friend last year, but fortunately for me, he didn't have the funds readily available and I came to my senses pretty quickly. He has since moved on to higher resolution DSLRs and a Leica M9.
Although I don't use the CFV much (the last time was in 2011), I've always hated the thought of parting with it. It's probably not worth much now anyways, so I might as well hold on to it.
On the few times I have sold some of my camera gear, I've often regretted it later. In fact, the only photo gear I've sold that I didn't regret was my micro 4/3rds equipment.
Do you still have the CFV-39....or was it a CFV-50?
Happy holidays to you!
Gary