Is that even a copy of anything that ever existed?
No.
The Confederacy had a brass frame version .36 1851 Navy Colt during the Civil War to save short supplies of steel. Same with the .44 Remington 1858 New Army-brass frame in the Confederacy although the originals were steel. Pietta makes several brass or steel framed versions of those also.
These brass framed Italian made cap and ball pistols in .44 caliber will hold up well if low power loads are used. 20 grains of FFFg or Pyrodex equivalent will not abuse them and provide a ton of fun. The manual lists a min-max of 15-35 grains of FFFg. If you want to go big, get a Ruger Old Army.
With $5 shipping and sales tax it came to $167 +/-. Showed up yesterday and I'm more than pleased with the fit, finish and lock up. I
was surprised to see the manual states using .454 balls. I assumed .451 would be used and have some to try. If they shave a slight ring of lead on seating in the chambers, they will work fine.
ETA: I had a brass frame Remington New Army I bought from Gander Mt. around 1982 for $129. I shot about 300 rds. through it and sold it in 2011 for $110. I rarely shot hot loads and it held up fine.
I had a blued Old Army also, which I regret selling. Those are unbeatable for a cap and ball revolver. Built like a tank.
Some interesting reading on cap and ball pistols and their loads. The .36 round ball was known as a capable killer, even though having about 100 ft./lbs. of energy at 30 yds.
http://www.theopenrange.net/forum/index.php?topic=133.0