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艺术家
Koch
A FINE BELLE EPOQUE AQUAMARINE AND DIAMOND NECKLACE, BY KOCH
KOCH: A FINE EARLY 20TH CENTURY NATURAL PEARL AND DIAMOND TIARA
A PEARL AND DIAMOND NECKLACE, BY KOCH
A DIAMOND PENDANT/BROOCH, BY KOCH
AN EARLY 19TH CENTURY DIAMOND SET BROOCH, BY KOCH
AN ANTIQUE TURQUOISE AND DIAMOND PIN, BY KOCH
A late 19th century sapphire and diamond pin, by Koch and two diamond brooches