For the first time in more than half a century, the Il Sogno villa (“The Dream”), located in the swanky Los Angeles neighborhood of Bel-Air, is on the market. With a list price of $39,500,000, this unique property is the historic showpiece of a neighborhood that’s home to celebrities such as Beyoncé and Jennifer Aniston. But this listing from the prestigious Jade Mills Estates of Beverly Hills is without a doubt a cut above. One of Bel-Air’s most beautiful homes, this former residence of commercial real estate mogul Howard Ruby and his wife, Yvette Mimieux, a multiple Golden Globe-nominated actress, was built in 1928 by renowned architect and engineer Mark Daniels. The Tuscany-style villa is a six-bedroom, seven-bathroom, two half-bath, 10,607 square-foot-masterpiece set in a secluded enclave surrounded by the Bel-Air Country Club. Purchased by Ruby in 1979, the property features interiors created by one of America’s greatest designers, Kalef …