Spence carbine serial number

[Fazer]

Hello. I have a Spencer carbine, made by Burnside. It has an A in the serial number, does that mean anything. Just not used to seeing that in those guns. Thanks

[Trailrider]

Are you sure it's an "A" or a misshaped "4"?

[Two Flints]

Remove the forearm and see if a better readable serial # is found on the underside of the barrel.  The serial #s should be the same.

Two Flints