A pair of Coke grips I pulled from a 2nd Model HE factory parts gun (rebarreled, re-cylindered, lanyard ring removed and original grips long gone...) that I recently acquired.

Excellent shape overall except for some flattening of the checks on the right grip panel and a couple of superficial dings here and there. Also, a smidgen of hardened black goo (for lack of a better word), above the medallion on the right grip panel. Any suggestions for removing that "goo" without damaging the wood finish?