Researcher is of course absolutely correct the Sportsman was not listed as a model 11. Had a Senior moment there when I said Sportsman Model 11.
As I do recall the Sportsman was introduced following the requirement to Plug guns to 3-shot capacity for migratory birds & Remington promoted this for all game by offering a 3-shot capacity semi labeled as "The Sportsman".

Miller/TN
I Didn't Say Everything I Said, Yogi Berra