50-500 USD or so
Serial number 231,282 indicates that your Browning 12 gauge auto-5 shotgun was made in the year 1946,just as you suspected.
I can't speak to the value of the 16 gauge, but in August of 2005 I purchased a very similar gun in the 20 gauge and was happy to pay 600 for it. For me there was some personal value.
These were made by H&R for Sears /High Standard in 1946 .good gun lots of fire power .However very old fashioned and 16 gauge ammunition is also not as popular as 20 or 12 gauge .These things effect real value its worth between 40 & 80 dollars depending on condition
100-500 USD depending on condition.
Savage guns were manufactured in Chicopee Falls from 1946 to 1960. A 410 single shot could bring from $75 to $150.
It was made by A.H. FOX between 1911-1946 average value about $550 to $1200 if it is in Excellent condition. Savage arms bought them out, but continued to produce the shotgun.
With the serial number that you have supplied,your Winchester model 12 pump action shotgun was made in the year 1946.
Your Browning auto-5 standard weight shotgun which was made in the year 1946,will bring between 600-675 dollars for a plain barrel model,900-1,000 dollars for a solid matte rib barrel model,and 800-900 dollars for a vent rib barrel model in the condition that you describe.You will loose some value due to the poly choke that was installed on the shotgun,but make it back buy the fact that you have a 16 gauge,instead of the standard 12 gauge.
It was made in 1946
Western Arms Company was a division of Ithaca that made inexpensive shotguns that appear identical to the Ithaca made Lefever Nitro Special from 1929 to 1946. Yours was made in 1932. Only 400 guns Western Arms Long Range Guns were produced that year, the worst of the Depression. Single trigger versions range fro $150 to $400 in useable to excellent condition.