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I've bought to Mr Sanborn in November 2009 a Grado GS 1000 is. The item was received but I did not get in the pizza box the warranty nor the invoice.


I would like to resell it and I need the invoice in order to prove that my headphone are a genuine one.


I sent you an email but maybe you did not get it. Therefore if somebody from Whiplash Audio could answer to me it will be very appreciated.