Plural of Christie; either multiple people with the surname Christie, or referring to Christie's, the famous international auction house for fine art and antiques.
From the proper name Christie, which derives from the name Christopher (from Greek Christophoros, 'Christ-bearer'). The auction house was founded by James Christie in 1766 in London.
Christie's auction house has sold some of the world's most expensive artworks—a single painting sold there for over $450 million! The name 'Christie' in English originally meant 'follower of Christ,' which is pretty ironic for a place where people compete fiercely for material possessions.
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