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The Buck Steelmaster Model #137 in June 1974 had a list price of 12 dollars. It came with sheath. 5 inch steel with metal handle w/cam lever. The steel has one side with coarse grit and is surrounded by 3 sides with fine grit. This tool is used to sharpen knives.
This is the latest addition to my ever growing knife collection. My collection started as kitchen knives and has lately branched out to pocket knives. I try to limit myself to the American made Buck 110 models as a subset to my collection. Can you see Ms. Goofy rolling her eyes right now?