Would need the specific model number.
It s a Stevens model 311D double barrel shotgun serial number A226687 16 gauge. everything is on the side of the shotgun.
what is a newera nitrohammerless #4012 model 1900 double barrel shotgun
"Your" Winchester Model 21 Double Barrel Shotgun was manufactured in 1933, giving it an age of 77 years, as of 2010.
The Stevens model 311 was discontinued in the year 1989.You would have to contact Savage/Stevens to get the actual age of your double barrel shotgun.
Model 24 is a semi-auto 22.
The barrel of this shotgun simply cannot be removed. It is screwed in and requires a barrel vice and the appropriate wrench. The trigger group can be removed by means of the pin at the back of the receiver, which would allow for easier access to the barrel, but this is a complicated process and is not recommended. Nothing can be removed from the J.C. Higgins Model 20 to help clean it, unfortunately.
Post WW2 through the 1970's.
The exact value of a 1909 Ithaca double barrel shotgun stagecoach model would actually be dependent upon a number of factors. The most important factor that would be considered is the condition of the shotgun.