Ernie.
I collect early A5's and may be able to help you figure out what you have.
The 16 ga A5 is a fairly common gun. They have short chambers making them unattractive to the average buyer. Buyers that make the effort to find short shells or load thier own are out there, but there are not a lot of them. Most are plain guns with no engraving. If there is engraving on this gun please describe it. Also, look at the top of the barrel and let us know if the name "Browning Arms, Ogden Utah" or similar markings are present. If so post them exactly as written. You can ignore all the small symbols etc as they are proof marks and not important at this point.
Also, post the serial number and I'll confirm the age and model for you.
Jeff