It was made after 1938 and before 1948 (more than likely, a few Model 11s were made up until 1950) when the Model 11-48 came into production.
Worth depends on original grade and condition. If it is in 'using' shape it is still a fine shotgun and its sentimental value is a consideration too.
From the Remington website at
http://www.remington.com/magazine/history/m11.htm
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The often retold story of Browning's unsuccessful attempt to negotiate a deal with Winchester to manufacture his autoloading shotgun design is too well known to dwell on here. For we Remington afficionados it is just as well, because had he been successful there would have been no Remington Model 11. After his failed attempts to strike a deal with Winchester, and after completing an agreement with Fabrique Nationale in Liege, Belgium to produce his autoloading shotgun, Browning was still left without a manufacturer in the U.S. market. Browning's license agreement with Remington, finalized in 1904, changed that and set the stage for the classic Remington Model 11
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THE SPORTSMAN
A significant modification of the original five shot design resulted with the introduction of Remington product engineer C.C. Loomis' three shot "The Sportsman" version of the Model 11 in 1930. This gun was added to the lineup as wildlife conservation became of greater concern to sportsmen and the population at large. The Sportsman was identical to the Model 11 in all respects with the exception of the two-shell capacity magazine and a greatly modified forend.
The Sportsman model was originally rolled marked on the left side of the receiver as such. Similarly the Model 11 receiver was marked Model 11. In 1938 the receiver model roll marking was discontinued on both models and replaced by "Model 11" or "The Sportsman," as appropriate, stamped on the bolt in large letters which could easily be seen through the ejection port when the bolt was closed.
The most significant new feature of The Sportsman, other than its three shell capacity, was its new hand filling beavertail forend, liked by some and despised by others. This forend was much larger in cross section (2.04" vs. 1.68" in 12 ga) than the regular Model 11. This design and the patented takedown screw securing it to the magazine tube was designed by C.C. Loomis with the patent assigned to Remington. The takedown screw on The Sportsman provided the same function as the magazine cap on the Model 11.
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hth,
lpl/nc
(who has an older Model 11 too, with a sliding safety in front of the trigger)
