I'm trying to identify two different 1858 New Army revolvers.
Serial numbers are "19918" and "6" with no signs of tampering. Both feature brass frames.
These have been in the family since the Civil War and we're trying to determine date of manufacture as well as any other information that may be available.

On the 1863 model, the top of the barrel reads “ E. Remington and sons Ilion, New York USA”:

On the “Beals” model the top of the barrel reads “Beals Patent Sept. 14, 1858 NY. The serial number on the bottom is clearly stamped “6”. There is not the faintest evidence that there was ever any other numbers that might have rubbed off. The gun is in such overall excellent condition that I’m sure if there were other numbers, they would have shown up.

Any help is greatly appreciated!