Starting in 1921 Remington date code stamped all it's firearms on the barrel. You can look up the details on location and the code table on the Remington Society of America on the Manufactured Date link.
Browning.com has sn data under customer service.
No published sn data for this shotgun.
No published sn data.
No published sn data.
Browning.com has sn data under customer service.
Proofhouse.com has sn data.
You will have to call Browning with the sn to find out.
No sn data in the public domain.
No published sn data.
No published sn data.
Browning's web site has a sn search function.
This gun was made in 1952.