Help with Silver Hallmarks

Hello

New to this forum. I was hoping someone could help me with 4 Hallmarks on a spoon and pusher set I have. I did alot of research and only could come up with the first mark which appears to be the year “1773” . If anyone could help I would be very grateful.
Best Regards
Steve
hallmark.jpg

The four letters are E P N S. This stands for ElectroPlated NIckel Silver which compises a base metal with a very thin layer of pure silver on the surface. It is a generic marking so cannot be attributed to any particular manufacturer or time frame.

That stinks. I thought it was C P A S. Such a nice set. The first letter is a dead ringer for the Shetffield marks that said 1773 which is why I was confussed. Thanks for the info and your time.
Best Regards
Steve