Can't tell exactly- the Mossberg 385 bolt action shotgun was made from 1964-1983. After 83, it was made as the 385 K-A, and at an unknown later time, model changed to 385 K-B. In any event, a fairly recent manufacture.
$100 in mint condition
The Mossberg 410 183D B was made from 1950 to 1953.
Can't find that model in the Mossberg line-up.
The 151M (a) was made 1947-1948.
The value of a Mossberg & Sons Model 385KB 20 gauge shotgun typically ranges from $200 to $400, depending on its condition, age, and any unique features it may have. Factors such as the presence of original packaging, documentation, and modifications can also impact its market value. For a precise appraisal, it’s best to consult a firearms expert or check recent sales data from reputable auction sites.
The Mossberg and Sons Model 146B was manufactured in 1954-1958.
1947-8
From 1968-1971.
that model was only made in 1982.
1954
Mossberg
No published sn data.