8 You have a highly collectible vintage pocketknife made by W.R. Case & Sons Cutlery Co. Based on your exact markings, it is a Case XX USA 1986 "Peanut" or "Small Folding Hunter" (pattern 5120) with Genuine Stag handles and a stainless steel blade.Decoding the MarkingsCASE XX / USA: This stamp format was used during the mid-to-late 20th century.4 Dots: Case utilized a dot-dating system for many years. In 1970, the company started placing dots beneath the "USA" stamp. A new dot was removed for each subsequent year.Because your knife has exactly 4 dots remaining, it was manufactured in 1986.5120: This is the knife's pattern code.5: Indicates the handle material is Genuine Stag (Antler).1: Indicates the knife features 1 blade.20: Represents the Peanut pattern (which is traditionally a smaller, 2-inch folding pocketknife).SSP: Stands for Stainless Steel Premium.

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