Registry, 1911, 10¢ ultramarine, o.g., never hinged, bright color, wide margins, Very Fine to Extremely Fine; with 2008 P.S.E. Graded certificate Graded (VF-XF 85, SMQ $220). Scott No. F1  $175. $0 (Image)

Registry, 1911, 10¢ ultramarine, left margin plate block of 6 with imprint, o.g., hinged at top, others never hinged with short gumming affecting lower left vertical pair, strong bright color, Very Fine. Scott No. F1  $1,800. $0 (Image)

Registry, 1911, 10¢ ultramarine, Thirteen F1 covers, including unusual uses to England and Germany, one of Dept. of Interior penalty entire returned to send, sent from various states including VA, CA, DE, MO, NY, NJ, MA, KS, DC and ID, nice selection with $1,105 catalog value, F.-V.F., ex-Robbins. Scott No. F1  Estimate $400 - 600. $0 (Image)