Hiya Dawgfan, welcome to the forum. There were four knives in that series of 1974-75, celebrating Schrade's 70th anniversary. Barlow, Small Stock, Large Stock, and your Sharpfinger. These knives were serialized, so I am assuming the number on yours is the serial number. SOMETIMES when I aquire a nice boxed Schrade like this, I lift out the inner flocked resting place for the knife and there is the registration papers beneath it.
Anyone else?
Thanks for bringing us your question!
Phil