Your serial number indicates that you have a Browning auto-5 standard shotgun in 16 gauge,that was made in the year 1953.
1971
I have a belgium 12 gauge browning shot gun with the serial #B67119. I am trying to find out what type or size choke it has
You will have to call Browning to find out.
1977
No serial number provided
A Browning Auto 5 Lightweight shotgun was made in 1957 with that serial number on it.
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.
This gun was made in 1960