I have a brass framed Remington NMA replica that has an Armi San Marco maker's mark but the box and instruction manual show the importer to be "Kassnar"...a name I've never heard of before. A Google search showed Kassnar to be an importer of many types of firearms, previously located in Harrisburg, Pennsylvania, that closed it's doors in 1989.
Interesting thing about this revolver is that while the barrel has the usual warnings, they are all on the bottom flat, under the loading lever. This gives the overall appearance a clean, tidy look. I don't have any good photos of this gun's markings but will try to get some and update this thread.