Just as a point of reference, the Fox Model B was introduced in 1940,
(1940 Fox catalogue)
and there was no such thing as a Stevens Model 311 until 1948.
(1948 Savage/Stevens/Fox catalogue)
From 1931 until WW-II there was a Springfield No. 311, but it was built on the old G.S. Lewis Patent stricker action.
(1933 J. Stevens Arms Co. catalogue)
The Springfield No. 311 was a cheaper version of the Riverside Arms Co./Springfield Arms Co. No. 315 and the slightly nicer J. Stevens Arms Co. No. 330.
