I have another question about the Webley Mark series of revolvers: what would their grips have been made of? For the later ones, Marks IV-VI, some of which I have seen, I should have thought Bakelite or some other fairly hard, brittle forerunner of modern plastic; but I have read that some grips were of horn, or staghorn. Was there a synthetic product called staghorn? Real horn seems to me unlikely for a military weapon, but I don't know, and I'd be interested in any comments.