the fact that is marked with 250 only, dates it after 1931 - that year alone the guns were marked with both the earlier two digit and the later three digit model numbers....and i doubt that production in 1939 -40 was substantial - so assume 1932 to 1938.
as ted notes, it has the double proofs and is a 12ga gun....choking is pretty predictable on these guns - about 25 thou constriction on the right, and about 45 thou on the left. i have owned a very similar #226 robust for many years (s.n. is 184688)....i slightly extended the forcing cones and have shot quite a few 1 and 1 1/8 ounce loads - mine is a straight stock rather than the more usual half pistol grip. these guns are fairly plain, but exceedingly well built - "robust" indeed.
best regards,
tom
