50-500 usd
No sn data in the public domain I know of.
Can't answer without knowing who made it.
The Mossberg Model 800B was produced from 1964 to 1981. To determine its age, you would need to find the specific serial number, which can help identify the year of manufacture. If you have the serial number, you could look it up or consult resources specific to Mossberg firearms for more precise dating.
No published sn data.
This shotgun is a mossberg model 85. made between 1934-1937. dont know value.
Savage E99 , serial #516511
The Mossberg and Sons model 26B was made from 1938-1941.The value is between 35-100 dollars,depending on overall condition.
The Mossberg 44US began production in 1943. the 44US(b) was made in 1946-1947, and was replaced by the 44US(c).
No sn data
The Mossberg model 183D was made from 1948-1985.These shotguns are valued at between 75-110 dollars.
You will have to call Mossberg
Impossible to answer without a detailed description of all markings and the sn.