Impossible to answer without the serial number.
You must indicate shotgun or rifle and model.
What is year of manufacture of a Browning Shotgun A-5 with serial number 01553NP111?
No serial number = no way to answer.
You will need to call Browning.
1971
You did not provide a serial number. You will have to call Browning.
This gun was made in 1961.
You have a magnum 20 gauge auto-5 shotgun that was made in the year 1967.
1977
2000
Your Browning auto-5 shotgun with the prefix of 70s to the serial number identifies that your shotgun was made in Belgium for Browning in the year 1970.