You didn' t mention if it' s an original Colt or a reproduction? I' m sure you' re talking about a reproduction?If it' s an original Colt I would check Colt' s site out .www.colt.com. If it' s a repro it' s probably not much for collection purposes. These repro' s are a dime a dozen. If your brother wants a real shooter invest a little more and buy the Ruger " Old Army" .The original Colts are bring big money now.
Ruger Redhawk