Not sure if I can help any as I'm fairly ignorant when it comes to the old Stevens doubles, but I did just happen to get the 1929 and 1942 Stevens catalog in the mail recently that I snagged off Ebay. Unfortunately the descriptions and such in them isn't going to help me help you as they're fairly vague and the lithograph images aren't going to help much either as they don't show any close-up details.
The 1929 catalog lists the following SxS models...
No. 330 "Stevens Hammerless" in 12, 16, 20 and .410 gauges
No. 335 "Stevens Hammerless" in 12 and 16 gauges
No. 235 "Stevens Hammer" in 12 and 16 gauges
No. 311 and 315 hammerless models, and the No. 215 hammer are all three branded as Springfield Arms Co.
The 1942 catalog lists the following SxS models...
No. 530-M in 12, 16, 20 and .410
No. 530 in 12, 16, 20 and .410
No. 530-ST in 12, 16, 20 and .410
No. 311, 5151, and 5151-ST are all branded as Springfield Arms Co.
Somewhere between 1942 and 1950 they merged the separate Savage and Stevens catalogs into one, and somewhere during that time span the No. 311 was changed to be under the Stevens branding as that's how it's listed in the 1950 catalog.
Bookmarks