With its original design and high-quality construction by the renowned brand Victorinox, this folding knife is a valuable addition to any collection. The knife you are describing is a vintage 58mm Victorinox Swiss Army Knife, likely a promotional item, dating from the period when the "Victoria" tang stamp was used, which was before 1974. Identification Details Size: It is a 58mm knife, which is a common size for small key-chain Victorinox models such as the Classic, Companion, or Executive. Tang Stamps: The stamp "VICTORINOX SWITZERLAND STAINLESS ROSTFREI" on the main blade is a common marking for Victorinox knives.
The "Victoria" stamp on the back of the main blade indicates the knife was manufactured before Victorinox dropped the "Victoria" name from their tang stamps, which happened around the early to mid-1970s (specifically, around 1973/1974). The company name was originally "Victoria" (named after the founder's mother) until it became "Victorinox" in 1921. However, the "Victoria" stamp continued to be used on the back of the main blade for many years. Tools: The presence of a main blade and a second blade with a nail file on the backside suggests a simple, two-layer model.This tool configuration is typical of models like the Rally or a basic Companion (the precursor to the Executive). Handle: The aluminum handle is likely Alox (an anodized aluminum material used for scales) rather than the more common Cellidor (plastic). The "DX" letters suggest it was a promotional or advertising knife, where the letters are part of a company logo or an individual's initials, much like other examples of custom-marked knives found on the market. Summary Your knife is a vintage, likely promotional, 58mm Victorinox Alox knife from the late 1960s or early 1970s.
Its age is indicated by the "Victoria" tang stamp and the "Rostfrei" marking (which also indicates stainless steel). The "DX" marking on the handle is a specific customization and not a standard Victorinox model identifier.