I'd still like to know the cartridge for which the rifle is chambered. It's likely to be more valuable if it's factory or a commonly used wildcat (.219 Donaldson Wasp, for example) than if it's a complete one-off. I have and shoot a custom (J.W. Van Patten) high wall chambered for .219 Zipper Improved, topped with a 12x Lyman Targetspot. It's a fine varmint rifle, although not nearly as elaborate as the one under discussion here.

It would also be interesting to see if the maker's name, or at least the stock maker's name, appears anywhere. Sometimes, the marking is nothing more than a rubber stamping concealed under a butt plate or inside a forearm channel. The name of the engraver, if it's marked anywhere, would also be interesting.