In doing research on my Target II see there was a special order in 1928 that was engraved, silver plated with mother of pearl grips. Anyone ever see one?
Only in an old magazine article and that pistol was reported stolen some decades ago.
Stoeger did offer their standard range of after market grips for the Webley pistols from 1927 though, so you may be fortunate enough to come across one of these. You certainly seen to have a knack of finding the unusual - long may it continue.
John