Yes, it was made by Blunt & Syms with their office at No. 177 Broadway, NYC . These solid frame type combination guns are less seldom seen than other type over under percussion guns but are not rare. It looks like it could be a nice shooter if it checks out OK. With its hooked breech held in place by the cross pin, it is easy to remove the buttstock for cleaning the barrels after firing. There is lots of info on that company on the internet