Browning 16ga question...

I was given my Granpa's old belgium Browning 16 gauge this year. It looks to be in original condition, bluing is worn on the barrel and receiver.

Looking up the SN it seems the gun was manufactured in 1954.
It has the gold trigger, and some scroll work around the border of the receiver.
I'm confused because I thought only "Sweet 16" models had the gold trigger...but I don't think this is a Sweet 16 model because it does not say that anywhere on the gun.

Sure miss the one i had, Ran across this the other day,, it was dated in 2004 and several noted $450,, and do not shoot steel shot thru it,, ""My wife's grandfather left me a Browning A-5 Sweet Sixteen in 16 ga, I have been looking around at different sites and I am having a hard time dating it, the S/N on the underside of the receiver is 2S over 97967 it has a Poly choke on it with a vented rib barrel. Stamped on the left side of the barrel is Browning arms company ST Louis MO & Monteral PQ. and on the other is Made in Belgium, the barrel has 2 numbers stamped in it G16469 and the number 34999 is stamped on the barrel and on the part of the barrel beyond the barrel extension guide. On the left side of the action is stamped Sweet Sixteen, It is in excellent shape no dings or scratches the blueing looks great. I don't think he ever shot it after he had the choke installed. I went and shot some trap with it last weekend and did great with it, I have no plans on selling it but would like to know the rough value of it. Thank you for any help you can give me."" Factory polys were common, and this one produced 1954,