After a look, I would swear on a stack, that it is a Pietta. A Remington would not have been brass. A true 1858, viewed in profile, shows around 1/4" of barrel thread. This one does not. The machining on, and in, the cylinder, is too clean to be an Antique. If it were a small manufacturer from the period, using melted stock, the metal would likely have taken on some corrosion by this time, and show some manufacturing imperfections. The steel shows no corrosion or pitting, which would be expected by now, and would be normal. The cylinder notches are also longer than an 1858, and perfectly machined, with no wear. An Uberti copy is almost identical to a Pietta, but there is a subtle difference in the lengths of the cylinder notches from the two Italian companies. Check out MidwayUSA, and look at a Pietta 1858. The Uberti 1858 will also show on the margin of that page, so that you can see the difference. They are $289 new in the US, today. Expect to pay about $400 for a new one in Canada. Nothing wrong with a Pietta, unless it is being passed off as something that it is not. A good 1858 Remington Antique fetches $1400-$1900. This has been a great thread, that reminds us that everyone has an opinion. Antiques are great. If you can't prove one to 100% certainty, don't buy it. As to the stampings on this gun, let's just assume that the original owner just thought that it would be cool to mark it, the way that he wanted it. Call the CFC and register it. They gladly will. After that, send them the pics, and ask them if it is an Antique. If they think so, they will de-register it, and the case will be closed. I think that this one will stay Restricted. I am not an expert, I just watch CSI.