Tales, I disagree on the lathe use. Lathes have been around for centuries. The fact the handles look machine lathe turned, probably on a copier, might lead one to believe the grinder is later. Handle styles, as you suggest, denoting the Victorian period definitely age the handles. If you look at the link in my post for Cowan's Auction, the last post #286, has grinders with very similar handles. No age is given but estimated price is still over $150 so the value is still there.