It is a Majesta gramophone, the plaque is not an official KM designation because this would read "Eigentum of the KM", but it could be made by a sailor of this u-Boat during or after the war. Without solid provenance it is almost impossible to say by whom or when the plaque was added IMO.
Correct glaser, a Majesta that sounds quite well yet
Thanks for your comments and it causes me some other questions like: is this plaque a period made? and the way of the putting on the gramophone? From what period are this Majesta's gramophone?
In 2007, a Belgian dealer/collector stated on a forum that he had bought the U 255 gramophone from a man in Scotland together with some long playing vinyl disks. When another member told him that some of the disks posted in a picture next to the gramophone were postwar, he said he added those disk but they came from another buy.
original text "ich habe von ein man in schotland einen alten grammophon gekaufd mit schaltplatten dabei ; auf der seite steht einen aluminium placke mit EIGENTUM U-255;
der man schreibte mir das sein fater am ende der krieg dieser gramophon aus ein u boot geklaud hat"
Thank you very much for such interesting information glaser. It's possible to see these pictures better or the link where this dealer exposed the gramophone?
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