Hi, I am struggling with the assay mark here (is it london leopard or edinburgh castle) and therefore struggling to date. Someone did say it was London but with the data letter Y this didn’t make sense - i was also told 1980’s ish but an mot sure that type of screw back earring was still made then. Any help hugely appreciated - not for value - for family interest.
Neither London nor Edinburgh - it’s a Dublin import mark for 1966.