No
This gun was made in 1947
see the Browning website
The last 2 letters in your serial number NZ indicate that your Browning 325 in 20 gauge was made for browning in the year 1991.
1924
1973
1980
You will have to call Browning.
your browning auto 5 standard 16ga was made in 1949.
It was made in 1929
1929
This gun was made in 1950.