What do you want to know?
no
Browning's web site has a sn search function.
0-250 USD depending on condition.
yes sir
They have become collectable in the last few years. 100-500 USD
Cabela's has one for sale right now for $849, excellent condition. I've seen then go for anywhere from $400 - $1000.
Your Browning superposed,over under 20 gauge shotgun was made in the year 1951;with the serial number that you have provided.
The Savage 24S (not 245) was made in the late 60's though the late 70's. Exact production date can be determined through the serial number, if it's that important.
20 gauge is larger
Dell O'Dell Show - 1951 1951-07-20 was released on: USA: 20 July 1951
12 gauge is thicker than 20 gauge. The lower the gauge, the thicker the sheet metal or wire.
a 20 gauge is a type of many shotguns but it is smaller than a 12 gauge but bigger that a 410. a 20 gauge is a good shotgun for all ages.