Its a 12 guage over/under shotgun.
The 2 letters in your serial number(NR) indicate that your Browning 325 grade VI was made in the year 1997.
You will need to include the whole serial number to get the answer that you seek.
The browning 325 grade II was made in 1993,1994.while the citori 325 golden clays were made in 1994 only.
You will have to call Browning to find out.
1988
500 uSD
mfg 1990
1994
You have not listed the entire sn. You will have to call Browning to find out.
Your question cannot be answered without you providing the full serial number to your browning.
Basically the same gun. 325 came out first and while it did have a silver receiver just like the 525, the engraving was much more plain on the 325. They also made a 325 Grade 2. browning 325 has a flatter top rib and unvented barrels came in grades from grade1, very plain to grade 6 ornate ingraving with inlayed gold ducks and red setter. i have b525 and i much prefer my wifes b325 better gun if you can find one. They have a cult following. my b525 is been sold for a grade 6 b325 older than the b525 but better
Made in 1993. 325's were made from 88-95 and came with Invector chokes.