Value is too difficult to be accurate without seeing the gun. Condition which includes the amount of original finish and original configuration will determine value. Auto 5's with poly-chokes, compensators and recoil pads (other than Mag 12's) will reduce value. A rough ball park figure would be $200-$400 range for this gun. This is based on common condition that the age of this gun would be in. Its possible that it could be better, but 1923 is very early. Recommend taking it to a gun shop for appraisal. note: okg 985 is simply the weight of the barrel.
75-575 usd
100-600 usd
50-500 usd
50-550 usd
50-500 usd
Basically impossible to value with just the serial number.
You will have to call Browning with the sn to find out.
A billion dollars
100-1000 depending on specifics
50-500 usd
50-500 usd
r Requires appraisal