Your knife is based on a Model 6010 S&W Bowie knife, as designed by Blackie Collins, and is a prototype that lead to the Collector Series of custom engraved and etched knives. The handle is Wessonwood, a patented faux wood. As you say, it is pictured in Rinke's book on S&W knives, page 98. There were a number of different designs submitted for the Series, your knife being the Jim Bowie design. Ed.