We couldn't find the model 252. There is a Citori model that is 253, however if you could describe what type of action you have such as Over/Under, Automatic, pump - it would help. "PX" stand for made in 1983.
Need a detailed description in order to answer.
Browning.com has a sn fucntion under customer service.
Impossible to date from patent number.
With the serial number that you provided,your Browning standard model auto-5 shotgun was produced by FN of Belguim for Browning in the year 1955.
The 72S suffix to your serial number indicates that your Browning superposed shotgun was manufactured in the year 1972,by FN of Belguim for Browning.
If your browning auto-5 was made in 12gauge then it was made in 1925,if your shotgun was made in 16gauge then it was made in 1929.
You will have to call Browning with the sn.
You must call Browning with the serial number or visit their website.
You will have to call Browning.
browning sweet sixteen serial number 5s43804 what year was it manufactured
The 69G prefix to your serial number indicates that you have a Browning Light weight 12gauge auto-5 shotgun,that was produced in the year 1969.
1988