Check out the auction on Friday the 13th (!) of November at Du Mouchelle's Gallery in Detroit:
http://auctiondetroit.com/#
A number of African stuffers and high-grade guns including some small bore Parkers. The collection is from Al Warren - a former GM VP. I bought one Warren gun a few years ago (a M42 Winchester), and condition was very good.
Not sure how much Du Mouchelle's knows about guns, judging from their auction estimates. Sure wish I could buy the guns for what their estimates are