I have been clicking everywhere silver-related, and even bought a couple of silver books - can’t find this pictured anywhere, but from my reading it seems the castle hallmark - one tower, not 2 or 3 - is from Exeter, England, sometime before the assay office closed in 1883. Can that be possible? I am a beginner. My guess at Exeter may be waaay wrong. Please check my photos, any comments appreciated.