Check the top of the receiver and under the forearm.
No published sn data that I know of.
1970's-1980's probably.
I would need to know the model number to your shotgun,along with the type which would be single shot,or a double barrel,along with the overall condition of your shotgun.The number provided by you is the serial number.
Check the frame and barrel
CHeck the barrel and receiver.
SN not required before 1968
On the bottom side near the triger
What year is a Parker Shotgun Serial number 126212
No way to value with just the serial number.
The serial number to a browning shotgun made in the year 1989 will have the letters PN found some where in the serial number.
Depends on model and when it was made. I have a Stevens 84-C that has no SN on it.
price value of browning shotgun serial number 35354