I have done SS grip repair work for many years. My Dad restored vintage musical instruments. When he replaced ebony finger boards on instruments from the 1930s and 40s, I asked for the old ebony. Properly aged ebony can be used to replace any missing pieces. Contour the replacement pieces to match, apply a light coat of ebony stain, and the repair is very difficult to detect. Attached are before and after photos of one such grip.

Obverse Before.jpg (122.62 KB, 129 downloads)
Reverse Before.jpg (123.61 KB, 128 downloads)
Obverse After.jpg (113.41 KB, 129 downloads)
Reverse After.jpg (106.68 KB, 128 downloads)

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