Decado, I have two Randalls, a 40 year old 6" Sportsman's Bowie bought for $25 when I was 18 years old (my parents were horrified at the price!) and a 7" No. 1 from 1979. I would not sell either for $400 (folks, that's love, not reason!).
Contact Bruce Woodbury at bwoodbury@simplot.com he collects, buys, sells, swaps, and generally knows scads about these great knives and their history. Perhaps I can undo an unintentional wrong I did him some time back. I hope that you will find him helpful. Say "hello" for me if you do contact him.
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Walk in the Light,
Hugh Fuller