Charlie, I think Glenn's got the right idea, but even in those the Schrades are hard to come by! I've got and orginal 1932 catalog, which has the catalog E and supplements up to 1932. Pretty near identical to the re-print from A.G. Russell. No sign of it in there either, so it must date to some time before 1926. If the catalogs went alphabetically (just surmising here), where the heck are A,B,C, and D??? I've never seen or heard of anyone who had seen one. Mighty frustrating.
I don't think the peined pins are a sign of an impostor either. I believe that spun pins didn't start appearing until the late 'teens to early twenties (someone correct me if I'm wrong here), before that all the pins were peined, and often rather crudely on the jigged handle knives since they were likely done with a cut-face hammer.
Eric