Welcome to tnet I know old silver didn't have makers marks is there any other markings on it. I bet if you did some research you would be able to identify it that's part of the fun !!!!Nice find!!!!
I think their photo (in the link in my earlier post) doesn't show the detail well, but it is the same as yours in my opinion. Does this seller's picture match, in your opinion? VINTAGE SHEFFIELD SILVER PLATE SPOON (S)/5 WBM/LILLIES/LILY/JEWELRY SPOON RING + | #418983034
Sheffield was a place where many manufacturers set up shop, not a particular maker.
Yes, a lot of plated stuff (like this), but not all pieces marked Sheffield are plated.