Capt, I ordered a Smith Bowie with Ivory some five years ago while visiting the shop. It is now time for specs and my supplying the ivory to the shop (How time goes by quickly!)

Anyway I have seen very large Ivory handles on bowies, I know that there are standard specs for an ivory handle can you tell me what they are?, also are there any rules as to making the handle larger than the standard shape or the commando shapes? Thanks for any information anyone can provide.