Browning sweet 16

Question
I've been trying to date my father's Browning Sweet 16 shotgun without success. The s/n is A3824.  It's condition is "good" or better considering it's age.  As I recall, it was purchased in the late 50's.
Thanks for any help!     
George

Answer
The gun was made in 1957. In 1957-58 the prefix "T" for Standardweight and Prefix "A" for
Sweet 16 numbers mixed, but range from 1-10900. 1958-1976 Ser. No. sequence changed to include a one or two digit numeral followed by an alpha character. Hope this helped!

https://store.bluebookinc.com/Info/PDF/Firearm/Serialize.pdf