Those barrels at least have a nice panel on the rib to try and fake up a Parker Bros. barrel legend. I don't see any proof marks on those barrels. I presume the stars are choke markings.
A hunting buddy in my college years had an 1899 vintage straight gripped, skeleton butt plate, DH-Grade which had been retrofitted with steel barrels with Italian proof marks. One of the most common sources for steel barrels for Parker Bros., Winchester Model 21s, and L.C. Smith guns back in the 1960s was Atlas Arms --
Atlas Arms Parker Barrels.jpg