Binko: Ansley didn't sell the A.H. Fox Co. to Savage. Ansley H. was long gone making cars & other stuff by that time. My Fox guns are marked "ANSLEY H. FOX" on each side of the receiver and "MADE BY THE A.H. FOX GUN CO. PHILA, PA USA" on the top of the left barrel. The early Sterlingworths (pin guns) are marked "STERLINGWORTH" on each side of the receiver and "THE STERLINGWORTH COMPANY" on top of the left barrel. The gradual transition from the Philadelphia Arms Company until it's last breath with SAVAGE went through several bankruptcies and owners. I don't have a Savage produced Fox and so I can't say for sure how they were marked but I believe valuation grade for grade would be about the same until you get to the very end of the lower grade Foxs.
By the way, Mike McIntosh notes that everything Ansley Fox ever made was advertised by him to be "THE BEST --- IN THE WORLD" even the 25MM brass framed WWI "Very Pistol" flare gun.
Just My Humble Opinion.......George