Suzkat,
The barrel is 32" long...0.980 @ breech...0.970 @ waist...0.990@ muzzle;
Bore is 0.340 land-to-land; 0.360 groove -to-groove;
LOP 13"; Weight 9.5#;
Lockplate is marked... Whitmore, Wolff & Co. Pittsburgh...inside an oval cartouche ( badly pitted though );
The front sight does have the circular 4 punch marks on the corners, but they also are badly worn also.
The barrel does not show any other dovetail ( filled or otherwise ) that would indicate the rear sight was ever anywhere else