No published sn data. 50-160 USD or so
Need the serial number to answer.
1987
You cannot the serial number is required.
The serial number only tells one where in the run & what year it was manufactured in, not who made it.
No published sn data
It was made in 1947
Your shotgun was manufactured in 1947.
No published serial number data.
1979
1969
Manufactured 1906
Manufactured 1915