I have a small german Deri-Korri vintage drum set from the 50s/60s I want to sell now. It stood for decades in the attic and would probably be overhauled. Do you know to whom I can approach in this case. Where are the enthusiasts and passionate collectors? Which forums can be used? Of course I'm interested also, which price range is to expect. Located in Hamburg/Germany.   Thanks and best wishes Peter Peitsch <pp01@gmx.de>