
This is a Gould No.37 Model in .22 Long Rifle with a 10" blued barrel, nickeled frame, guard & butt, and wind-gauge rear sight w/target bead front.
The No.37 was a redesign of an earlier target pistol by a noted gun writer of the era, and the editor of The Rifle (the precursor to The American Rifleman), a Mr. A.C. Gould.
I've read that his "improvements" were to use the mid-size Pocket Rifle frame (like the Conlin Model) ILO the earlier, heavier Hunter's Pet frame; and to use adjustable target sights with a slightly smaller grip - but ditch the Conlin's trigger guard spur.
The No.37 was made from 1890 to 1903, and this one's serial number is just under 12,000 - so I'm thinking 1892-ish manufacture.
(All the Stevens factory records "mysteriously" dissappeared in the early 1920's, when they were being investigated for fraudulent WW I deals)
It was encased in a nice, velvet-lined, leather covered, minimum luggage-type case with some old ammo - the case is definitely not factory issue.
And, at sometime in it's long life, someone has done a pretty decent job of adding a walnut forend and thumbrest to the gun - as no Stevens was so issued, AFAIK.