Thanks for the info! I quess I have to go for a WW2 snail drum, too bad they are so expencive and hard to find..
On another hand, that makes a collection more interesting
Found this one
http://my.qxl.no/accdb/viewItem.asp?IDI=13208630 the price starts at 10000nkr, that is almost 1000USD! So my search goes on..