No published data for sn; 50-750 USD
497sd3fg5231v7200
No way to answer without the serial number.
A Browning Auto 5 Lightweight shotgun was made in 1957 with that serial number on it.
The 5G included in the serial number indicates that your browning lightweight 12ga.was made by browning in 1965.
1966
1968
1953
Produced about 1950.
Lightweight Colt Commando LCC serial number should have LCC000077. Titanium, Stainless, Teflon. Probably produced in 1996. I believe there were 250 produced.
Sometime after 1951 .
Made in 1970
1968