50-500 usd
No sn data in the public domain I know of.
Can't answer without knowing who made it.
Savage E99 , serial #516511
No published sn data.
This shotgun is a mossberg model 85. made between 1934-1937. dont know value.
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).
Impossible to answer without a detailed description of all markings and the sn.
No sn data
The Mossberg model 183D was made from 1948-1985.These shotguns are valued at between 75-110 dollars.
the 243 was new in 1969 its 375.00 in 100%
46M was made 1940-45