Originally Posted by Yippykyae
One is on the bottom of the receiver and the other is on part of the barrel. Which you can only see if you take the barrel off. If I remember correctly it is on the ringed part of the barrel. (I don’t know the proper name for that part of the barrel).
You should have a Letter followed by #5 numbers , earlier models had NO letter and #6 serial numbers .
In 1953 serial #'s 387000-438000 but those are #6 digit , in 1954 ALL L & H models started with either L83000 or H83000
The American Browning will have the serial number on the left side of the receiver and the FN produced A5 will have it on the bottom of the receiver.
This is also factual info :
During the WWII German occupation of the Browning factory in Belgium, Remington agreed to make their similar Model 11 with Browning markings and a few minor changes.
They are referred to as "American Brownings", and all had letter SN prefixes.
The WWII production (1940-47 only) resulted in some 63,000 A-5's in 12, 16 & 20 gauges.
SN Prefix letters & production totals:
12ga = "B" (38,000+)
16ga = "A" (14,000+)
20ga = "C" (11,000+)
FYI : I've personally seen a couple of FN Browning receivers with Remington barrels kind of bastruds !.