This is the first year of standard production of the 2 ¾ inch chambered 16 gauge.It is also the last year of the non-engraved sweet sixteen.
Barrel Rib four possibilities in 1937: none, solid (hollow) rib, ventilated rib with X posts or matted finish for Sweet Sixteen (SV page 98) Barrel Ring as before or drilled with three holes on the barrels of Sweet Sixteen Safety Gold plated (Sweet Sixteen only) Trigger Gold plated (Sweet Sixteen only) Misc. No serial number distinction between the Sweet 16 and the Standard 16 gauge A5s.105850 – 111000 1938: 111001 – 1182001939: 118201 – 1261231940: 126124 – 126175****1940 – 1953**** "A" Prefix serial number on the side of the receiver, American made Browning by “Remington Arms.” 1944-1948 Post war Liberation guns, Serial number 128117-128646 "are so out of sequence there is no way to establish accurate production dates" S/V p76[b] 1944: 126201 1948: 1317381947 Post war Belgium made “X Prefix Series.” No serial number distinction between the Sweet 16 and the Standard 16 gauge A5.My husband inherited it from his grandfather and we are trying to find out more about it (not to sell it, for personal knowledge). Dating these old guns are at best an educated guess.The dates listed here are based on records/logs with the range of dates. I compiled this quick reference serial number guide for dating 16ga Browning A5s and the Auto 5-3 Shot, by serial number. A common mistake I have seen in many, many, gun shops and online sites is to assign the 12ga serial number date to a 16ga.68S = 1968, 76S = 19761976 Japanese Production Began, however, FN still produced Browning “Made in Belgium” shotguns into 1984, SV p65.The serial number coding system changed to the serial number preceding the date code.The popularity and success of the Sweet Sixteen from 1937 through 1947 earned it a permanent place in Browning marketing as the 1948 engraved “Sweet Sixteen.” 1947 is also the only year the 3 shot 2 ¾ 16ga was marketed in the USA.Getting one of these extremely rare original factory issued guns at a standard gun price is a trophy in itself.It also has a choke "thingy" and a new pressure plug? It was set up for his grandson, who outgrew the gun and went into Rem 1100 12 ga.I owned two Sweet 16's when I was in my late 20's - early 30's, but I don't remember anything about the pressure plug adjustments.