Yes
You will have to contact Browning for a correct answer.
there are many avenues to find barrels for A5's. Try the "gunbroker.com" firearm barrel section. A5 barrels are sold there all the time.
100-1000 USD
It was made in 1946
Browning will send you a manual for free if you contact them
100-500 dollars
Anywhere from a few hundred to tens of thousands of USD depending on EXACTLY what you have.
Try Blue Book of Gun Values
With a break open shotgun, the part of the gun frame that is hidden by the closed barrels.
Look on auctionarms.com or eBay
You have not provided the entire sn. Call Browning for help
gun shop, gun show goto gun broker.com i got a 4 inch for a tarus 66 for ten dollar .