Pigeon - Silver 925% rhodium (12x15mm)
https://www.messagedevie.com/shop/hkz-55m02-pigeon-silver-925-rhodium-12x15mm-63457
https://www.messagedevie.com/web/image/product.template/63457/image_1920?unique=9f039f8
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Internal Reference:
HKZ-55M02