I recently acquired this pair of silver sparows with ruby eyes. The tail feathers have marks that are difficult for me to make out with my eye issues. Hoping someome can help? I think the first mark says CE. I cannot make out the second symbol at all. The third looks to be a face and helmet looking left and the final mark looks to be the letter C or maybe O? There is a 5th mark further up that says M2. I really appreciate someones knowledge and help.
I’ve never seen them before but I imagine these are Dutch markings after 1953
Dutch Hallmarks - Encyclopedia of Silver Marks, Hallmarks & Makers' Marks.