Single shot?
Rolling block?
The serial number is on the frame.
Could be a part number, serial number, inventory number, etc..
The barrel and receiver should have the same serial number.
Serial number will be on the frame or receiver. not the barrel
The serial number should be on the front barrel band, in some cases it is on the barrel.
Barrel or receiver or both.
Stamped on barrel, Barrel and reciever one piece.
Impossible to answer without the serial number.
On the barrel.
Check the receiver and barrel.
Check the barrel and receiver.
Check the frame and barrel.