NEW YORK — People of all ages buy comic books to read for pleasure, and a subset of them enjoy collecting investment-grade examples. Still others chase the original hand-drawn illustrations that are reproduced en masse in the actual comic books. “This is another level of fan that very much revels in owning one-of-a-kind works of art,” said Alex Winter, president of Hake’s Auctions in York, Pennsylvania. “It is this unique nature that makes comic art highly sought after by that crowd.”