Any thoughts on what these black marks could relate to? This body was attached to a 1967 neck. It had been refinished in Candy Apple red as I began stripping it I discovered first, a gold finish under the the red then a thick white primer then a veneer, under the veneer numerous bore holes indicating a bigsby and/or vibrola had been once attached to it plus a repaired neck pickup cavity and a repaired input socket. This body has seen a lot of wear if it could only talk!!