Dave would no doubt know when the first "Super-Fox" was shipped, but this ad for the "Original Long-Range Duck Gun" in 1925 states it was "announced" in January 1923

[Linked Image from photos.smugmug.com]

The Smith Long Range Wild Fowl was introduced in the 1923 catalog, but Dr Jim's shipping records show 1 produced in 1921 and 1 in 1922. 14 were made in 1923.
2,704 was the total production 1921-1942

Western’s 3" ‘Record’ with 1 3/8 oz. of shot was released in 1923

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