WEll when you look at the various example rifles there is a pattern of long, slim forend with schnable and two panel checkering on the forend that is distinctive, Two panel checkering on the grip that meets at the top without a border between the panels rather than crossing the top and checkering right up to the inletting on the grip. I'm not certain but at least one rifle may have a Wundhammer swell. The examples shown don't appear to have a cheekpiece but the rifles in the rack next to the checkering cradle have the pancake style cheekpiece. Being a mere novice at these classic rifles I don't know the maker but I think I might now recognize one of his rifles.
Each of the top grade custom riflesmiths seem to have something distictive about their rifles that allow identification or, at least, a suspicion of authorship. It seems enough to make a "Field Guide to Classic Custom Rifles" much like the Peterson Field Guide series.
Jerry Liles