I have posted it on Porsche Owners Club Germany:
Porsche Owners Club Germany - Thema anzeigen - 356A geklaut Bitte Ausschau halten!!
It's a copy/paste of twistoffat's ad because my german isn't that good. Hope he's ok with that.
I really hope Thorkild gets he car back.
I have seen the car some years back and know how much he loves his car.