genuine william moore made guns will have his name and one of his addresses engraved on the top rib. any other moore marked gun was not made by william moore nor anyone else in his employee.

same goes pretty much for other guns stamped with the name of a famous makers, such as manton. if there is no name and address on the top rib then it is most likely is a knock off made by some body else, trying to capitalize on a famous name...

keep it simple and keep it safe...