It may well be a trick of the lighting, but to me, it's been heavily buffed before refinishing, and someone's attempted to hand-checker the smooth walnut grips.
Lanyard rings for these are something you happen upon, for the most part, though I believe someone makes a reproduction, since so many are missing.
Lanyard rings for these are something you happen upon, for the most part, though I believe someone makes a reproduction, since so many are missing.