If you are talking about a Browning auto-5 shotgun?Then if yours is in 12 gauge it was made by FN of belguim for Browning in 1925.If your shotgun is in 16 gauge then it was made in 1929.
browning 2725
A Browning Auto 5 Lightweight shotgun was made in 1957 with that serial number on it.
You will have to call Browning to find out.
1977
No serial number provided
It was made in 1965
You must call Browning with the serial number to find out.
1966
Receiver
Impossible to answer without a serial number and detailed description.
See the Browning website, under Customer Service. They have some serial number data available.
Your serial number indicates that you have a Browning auto-5 standard shotgun in 16 gauge,that was made in the year 1953.