South American manufacture, no historical data available.
The CBC MODEL SB 410 BORE SHOTGUN is made in brazil and imported by firearms import and export Corp. located in Miami, Florida it is a break-action single shot shotgun
Try e-gunparts.com, gun show, gun shop, want ad.
You must provide the name of the maker.
About 100 USD
Impossible to identify without knowing who made it.
The value of a Model SB 20 gauge shotgun made by CBC in Brazil can vary based on its condition, age, and market demand. Typically, these shotguns can range from $200 to $600. For a more accurate appraisal, it’s best to check recent sales of similar models or consult a firearms expert or local dealer.
Made by CBC (Companhia Brasileira de Cartuchos), sold through FIE in Miami (they went out of business in 1990) Manufactured approx 1970-73 Inexpensive shotgun, worth maybe $75 if in good condition....
looking for stock model sb 20 gauge
Burn it!
Ammo, parts, dirty
$450
Stevens made the sb-300. You can cross reference it and it comes out to a Stevens 311