Brasiliera De Cartuchos Single shot 20 gauge SB serial number 329809, Value and age?
I believe I have the same gun. Same model but different serial number. Were you ever able to get any answer to your question?
Companhia Brasileira de Cartuchos (CBC),Ribeirão Pires, São Paulo, Brazil is one of the largest ammunition manufacturers in the world and also produces firearms and associated products.
CBC shotguns were imported in the 1960's and sold by mail order houses and mass merchants.
Retail value for a gun in good or better condition would range from $50 to $100 depending on mechanical and bore condition and remaining original wood and metal finish.