Architect Robert W. Gibson designed this Neo-Rennaissance 1905-built mansion. In 1917, his wife Maisie (on the painting) fell in love with Pierre Cartier’s double-strand necklace of 128 natural pearls, the jeweler offered a trade—the $1 million rare necklace plus $100 for the 52nd Street and Fifth Avenue mansion (at the time valued at $925,000) which would become his new boutique.