A 1962 Aston Martin DB4 GT Zagato Could Fetch $15 Million at Auction

For collectors, provenance, and limited production tend to be the winning trifecta—and the formula that helped send Ferrari’s 250 GTO ever higher into the market stratosphere. By the numbers, though, Aston Martin’s DB4 GT Zagato is even rarer. Born to race, beautifully designed, and produced in a run of just 19, the model has climbed well into the eight-figure territory. Now, one of the finest examples is set to headline the RM Sotheby’s Monterey Auction, taking place August 13…