You will have to contact Browning.
Browning does history lettersl. Check their website at Browning.com
You will need to contact Browning and request a history letter.
Contact the Browning service center at browning.com
You can order a history letter from Browning for @$50.
Browning offers letters
A call to Browning for a manual or a trip to a gunsmith is in order.
Browning offers history letters for @ 40 USD. It will tell help with the history you are looking for. Without knowing the features, markings and action type, there is not much I can supply.
Ned Schwing's book will have what you are looking for.
Browning now offers history letters. If you call them they will tell you.
The US Navy has made purchases from Browning many times throughout its history.
This is the same as a Superposed model shotgun. Introduced in 1931, Browning still makes these in Belgium.
Browning offers history letters.