My great grandmother gave me boxes of her metal dinnerware I'd love to know where] these are from.
Two pieces have the number 2952 then S.P.N.S. with a dog on top of a shield type thing with the letter c in the middle. It also have another symbol with twho bird heads facing opposite directions with a crown on top
https://photos.app.goo.gl/SU1EyoKTur4EoudF2