A marble Bust of the Greek Slave by the renowned American sculptor Hiram Powers (1805-1873), plus three classic Chevrolet Corvette cars from the collection of Charlie Oakes – a 1957, a 1960 and a best-in-show 1962 winner – will headline an online-only Fine Art & Antiques auction on Saturday, June 24th, by Neue Auctions, at 10 am Eastern time.