Well, I began examining the Bearcamp more closely after photographing it and decided the handle looked suspiciously like plastic of some sort rather than Mammoth Ivory. I sent some close up photos to David Warther, an ivory expert, for his opinion, and he agreed the handle was an imitation ivory of some sort. To make a long story short, I returned the knife to the auction company and they refunded my purchase amount.

Below are the close-ups which do not display any of the end grain Shreger lines that is characteristic of all true ivories.

Jim