Owner of this one ought to be overjoyed. Stuff like this was considered junk, or relegated to tool and tackle box kit, at garage sales during the 70s-80s when stainless and non-perishable scales and handles were becoming 'de rigeur'. I never bought any of these (same theme, vintage, different maker and different market) only because bone or leather handled Solingen-made (and Sheffield, and USA) carbon steel knives were available still 'brand new cheap' even during the late 60s.
Now, whether some collector-crazed sod will part with $3500 just to have something 'storied' like this in hand is a whole other matter. I re-profiled/reground and re-scaled the handle of a 1938 Hitler Youth knife 30 years ago (for a 2nd generation German immigrant) because he insisted that the knife still remind him of his family's past and yet allow him to use it for hunting and fishing. I obliged but distinctly do remember that the blade steel was better than anything I'd ever sharpened before.