細節
cover 3c Dull Red (11), large margins to just barely in left, tied by blue "Philadelphia, Pa. Jun 19" c.d.s. on 1853 blue folded cover to N.Y., matching blue "5 Cts. Due" straight line h.s., ms. "Rd 20" (Registered), registered mail in this time period was 5c in addition to proper domestic postage, so the 5c due is solely the added registry charge, very fine, a scarce usage, ex Gibson photo
拍場告示
It is not a registered cover, rather a double weight cover. The 5-cents due refers to the unpaid portion of the double rate. The estimate remains the same.