Technique rather than subject matter (he’s painted portraits for over thirty years) drives interest in Chuck Close’s recent artwork. For this remake of his iconic ‘Mark’ (’78-’79), Close layered gesso on the paper and screenprinted a grid. Using a dowel with felt on the end, each square is hand stamped three times with different colors. Factor in a week’s drying time for each layer and it’s no wonder that edition of 40 is still being printed. (At Pace Prints, 57th Street through Nov 21st.)