(Stamp Collars) American Red Cross, 1908 Christmas Seal, seal used as stamp ad collar on post card bearing 1908, 1¢ green, hinged in place, tied by "New York, N.Y. Dec 28, 1908" machine cancel to City Island in New York City, Very Fine and quite unusual. Scott No. WX4  Estimate $100 - 150. $0 (Image)