Hello, this is a filigree miniature representing the Castle of Santa Maria da Feira, in Portugal. There are 2 hallmarks in the piece, but even with the electron microscope I could clearly see only 1 of them, which has a “D” inside geometric shapes, but what intrigues me is that in the lower hallmark it doesn’t appear to be an eagle or boar, which would be expected from a Portuguese silver. Does anyone have any guesses as to what is represented in the lower hallmark, please?