The catalog is from 1926, and the knife could have been made several years after that, possibly as late as just after WWII. The tang stamping changed to Schrade Walden ca. 1946. Hard to say what someone will give for the knife. In that condition, you narrow your market considerably. On a good Ebay day you might get $50 or more. Next day no-one will give you $20. In mint condition, I'd give you around $150!!
Value is a weird thing, and depends on too many factors to pin it down more than that I think. It would be great to get some more opinions, as that's all this is, an opinion.
Maybe we'll get a few more $0.02 worths!?