Don't know your exact question, but from 1940 to 1946 production of the Auto-5 was turned over to Remington. Serial number is on the side of receiver. "ABC" for American made Version. (A=16 gauge, B-12 gauge, C=20 gauge)
Check under the top lever.
You will have to call Browning to find out.
Browning has sn data on their site under customer service.
Browning's website has sn data under customer service
You did not provide the serial number. Your options are to call Browning or go to their website and look it up under customer service.
Your Browning superposed,over under 20 gauge shotgun was made in the year 1951;with the serial number that you have provided.
You must call Browning to find out.
On the webste for Browning firearms, under customer service.
You must provide the serial number in order to get an answer.
See the Browning website, under Customer Service. They have some serial number data available.
A shotgun made by Browning. Browning.com has a sn function under customer service.
Check Browning's website under customer service, then date your firearm.