Edge Brand wasn't a Cutler as such, but more of a Merchant, Importer who had Knives made for them, I have owned many of these Solingen Fixed Blades, at one stage I had in my possession around 500 of the darned things lol, Linder was a close match for a Manufacturer when comparing these knives side by side with Edge Brand Knives, in saying this there was SO much variation between them and MANY Solingen Cutlers producing these Knives prolifically, I must say what attracted me was the fine Stag used often by these Solingen Cutlers such as Puma, Othello ( A. Wingen Jr. ) Linder, F.A Bower, C Schlieper ( many many more ) etc used on these knives, people have said at times that these were lower end, and I can guarantee you the people who have said this have not had a side by side comparison to such other good makers from Sheffield and the U.S, and lets not forget, they weren't a Custom Knife but a knife manufactured by the many thousands to sell at a lower end competitive price range - Schrade and others did the same yet still produced good Knives.
Most often a Rats Tail Tang, ,with a slotted Brass threaded Bolt flush finished at the Butt of the Pommel with either a One piece of Stag as pictured above and the OP's, and also 4 pinned two piece Stag Slabs as well again with the Rats Tailed Tang.
Heirphoto's Knife would most probably be a 1950's Knife as it is Carbon Steel, and the Carbon Steel versions of these Solingens were the fewer compared to the Stainless ( 70's 80's etc ) Bladed knives.
When I came across a F.A Bower Carbon Steeled Fixed Blade- it had the very yellow hued Stag as Heirphotos and was Carbon and when I first saw the photo I thought "mmm - F.A Bower"? but as I said there were SO many Cutlers in Solingen drowning the U.S Market with thousands upon thousands of these so called "Bowie Knives ".
The Siberian Skinner is a cool looking Knife that goes one step further than the "Buffalo Skinner"
Solingen Knives aimed at the U.S market hugely hence the name "Buffalo Skinner", kinda cool and deserve their part in the Knife History of these Countries.