This serial number represents 1926, but it is not a sweet 16. It could only be a standard weight 16 ga. You could be missing part of the serial number. What makes you think this is a grade II? Please refer to the Browning automatic - 5 book. If I saw it I could identify it for you. Sorry, just to many questions to answer yours. Auto5man.
Check the receiver, barrel
Value of Browning Sweet Sixteen serial # 74366
Early 30s, 100-650 USD
Can't be answered without a detailed description of all markings, finish, barrel length, condition, accessories, box, papers, etc..
100-500 USD depending on condition.
Your browning sweet sixteen was made by FN of belguim for browning in 1957,with the serial numbe that you provided.
your browning sweet-sixteen with the serial number you provided was made by browning in belgium by FN in 1956.
If there isn't an "S" in the serial number, it's not a Sweet Sixteen.
This number is not the serial number, but a stamping on the barrel. Look under the receiver - forward of the carrier for the serial number.
With the serial number that you provided,your browning sweet sixteen shotgun was made by FN of belguim for browning in 1928.
Your Browning sweet sixteen auto-5 shotgun was made in the year 1948.
Your browning sweet sixteen was made by browning in 1953.