That is a silverplate piece made by the Crescent Silverware Mfg. Co. of Port Jervis, New York.
The marks are part of the individual trademark used by Crescent to customize their own production. They have no translation in the way that English hallmarks would, where one mark represents the date and one mark represents the city of origin, for example.
S.P.C. Is the abbreviation for Silver-Plated Copper on any piece of holloware ...N.S. Is the abbreviation for Nickel Silver...E.P.N.S..is the abbreviation for Electro-Plated Nickel Silver....Inlaid Silver is a fancy way of saying plated silver...Alpaca and German Silver have little to no silver content....if the items are not marked with known internationally recognized sterling or silver content marks or not marked Sterling or .925 or 925/1000...the chances are decreasing that the metal has Silver content...it is a great approach to first educate yourself with the hallmarks of precious metals and then start pursuing items made of silver ...hope this helps...www.925-1000.com