I am picking nits here but......
I think this revolver does not have a historical prototype (that I am aware of..please correct me if I am wrong) therefore it is a stretch to call it an "1861 Navy" unless we purposely leave out the word, "Colt" even though "Colts Patent" is stamped on the port side. (I use the word "Port" instead of "Left" because we think it is in Navy caliber.) Certainly if it is a .36 which we believe it is, it is "Navy" caliber and certainly it has many common features with an 1861 Colt but the most glaring difference is the brass frame. As it has no basis in history, we might just as well leave out the year as well.
Nearly everyone who posted, referenced this and so I am not claiming a new addition to the thread. Not trying to say that I caught something that no one else caught. There are many folks on the forum who are far better informed about the history of these revolvers than I am. I am just being argumentative.
Lets talk about pistols which do have a place in history. The G&G, S&G, and L&R are not (to my knowledge) refered to by any specific year except in the Cabela's catalog when addressing pistols which look like the G&G and S&G. Did the manufacturers refer to these revolvers as 1851s because they had copied the design of the 1851 Colt? Did they refer to the revolvers by their first production year or company design year? Or did they simply call them by a name and not a year at all?
If we call the revolver referenced in the OPs question, an 1861 Navy on the strength of the argument that it closely resembles an 1861 Colt Navy, then we might as easily call it a G&G because it has a brass frame that looks like the G&G brass frame and is in .36 caliber. I have several pistols which have very long names. ("Pistol that looks like an 1860 Colt but has a brass frame" or "Pistol that looks like a G&G except that it is .44 caliber.")
When I started accumulating BP revolvers I was not in the least bit interested in historical accuracy. In point of fact I probably have not changed much in the feeling. But it does bother me when manufacturers cobble together pieces of this and pieces of that and then infer some connection with an actual piece. In cases where there was aprototype, call it by its correct name.
Now having said this, let me hasten to add that probably half of my revolvers are not even close to historically accurate. And I don't know the real names of the other half.
Perhaps I woke up on the wrong side of the bed this morning.