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Put hammer on half-cock and & push rear of barrel to the right.
value depends on overall condition and model????????????
The Model 57 is a 41 Magnum.
The Talon model 10 derringer was manufactured by General Precision Corporation in Waterford Ct.
Smith and Wesson Chief's Special Model CS45
The maker of your Derringer is no longer in business. Sorry-
125 usd
100-200
$75
His first model was produced in 1852.
100-200 USD
100 USD or so