Hello - can anyone help id this mark? It is on a pin/brooch that is a horse or donkey pulling a cart with three shamrocks. I believe the stones are Connemara Marble. It looks like IS and maybe a J or a symbol. Thank you!
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Irish Souvenir Jewellery (probably).
Old ISJ Handmade 925 Silver Irish Heart w/Connemara Marble Clover Pendant/Chain | eBay