“CHENG HUA NIAN ZHI”FOUR-CHARACTER SEAL MARK AND OF THE PERIOD(1465-1487) The superbly potted body of olive-shape, painted in a rich underglaze-blue with a pair of confronted dragons beneath stylized interlocking scrolls, a keyfret border set between two raised bands, flanked by a pair of loop handles springing from monster masks and set with loose-rings.A flaming pearl painted on the neck.