Pat, it's a rather large knife. At 4.5" closed it's a tad shorter than the Buck 110 (4-7/8"). The blade is 3½ inches long, overall length open is 8 inches. The blade pivots on a full 3/16” diameter pin so it's quite a handful.
I was told that it was part of the "Sportsmen's Series" when S&W decided to build a range of bench-crafted quality knives in the seventies. Design by Blacky Collins, built by Mac Lyle for S&W. These knives were produced in different models including the Bowie (Model 6010), Skinner (Model 6070), Outdoorsman (Model 6020), Survival (Model 6030), Folding Hunter (Model 6060), Fisherman (Model 6050) and the Fisherman-Fillet (Model 6040).
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Peter
RKCC CMI-006
RKS #5720