try a black ligth to bring out the trade mark may be some chalk dust and black ligth i think this is a german trade work fiddle i can be wrong one of the best people to ask is the luthiers that are on line here
fawnmeadow Says: Saturday, December 24, 2011 @4:03:49 PM
Thank you. Someone sanded most of the imprint off and then put a ahiny coating of some sort over it.
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