Wilton- RWP VINTAGE pewter mugs Steins with interesting markings

Set of 2 These appear to be quite vintage but I can’t seem to date them. They are marked RWP- which I know is Wilton but are also marked Pint and there is a small circular marking with something like a cross inside. These marks are all around the top lip none on bottom. Interesting vintage pewter to add to your bar collection. Really cool. These have imperfections ( see pics) which only add to my suspicion that they are quite old.