cover 3c Red on white entire (U3), UPSS5 (Thorp#5), size 7, knife 20, wmk. 1, unused but addressed entire, Nesbitt seal on flap, adhesive staining on back only from having been used as a paste-up, light overall soiling, otherwise will yield a very fine unused full corner (Scott retail for unused cut square $700.00), a very rare entire, Scott retail $3,000.00 for an unused unaddressed entire est.