The Savage/Stevens model 944 was made from 1936-1942.There were 1,500 made during this time span.The value would be hard to establish without a more detailed description of your shotguns overall condition.
Manual for Savage Springfield Model 234
savage
Mine is a 12 gauge pump. Chambered for 3" shell.
www.urban-armory.com
Parts of Savage Springfield Model 18 are available at Gun Parts Corporation. These can also be bought from Field and Stream.
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This would be a Savage model 38A or 58A or Savage-Springfield 18.41.
Springfield was a trade name used by Stevens/Savage c. 1920-1945. No relationship to the current Springfield Inc or the US Springfield Armory. What you have is a Savage Model 720 built under license from FN (Browning) They where also made by Remington with the Model 11 designation.
These are valued between 125-180 dollars,based on overall condition of your shotgun.
A Savage Springfield 67H is worth between 100 and 200 dollars pending on condition.
$55
Savage Arms is the manufacturer of Springfield Shotguns.