In order for me to properly assess what you have I will need to know the size and see clear, in-focus images of the plates and close-ups of the marks.
Please send the photos at your convenience. There is not an extra charge to provide more pictures here.
Thank you for the images. There is a word or words in the touch mark at top, could you please send a more clear, in-focus close-up so I can decipher the word, or can you read what it says?
Thank you for the images. Please allow me some time to look these over for you.
I believe the words are Etain Zinn for pewter, which is usually indicative of 20th century pewter ware.