UNITED STATES – MINT BACK-OF-THE-BOOK COLLECTION – 423912

UNITED STATES – MINT BACK-OF-THE-BOOK COLLECTION – Very nice and well populated collection covering airmails, essentially missing only the dollar value Zeppelins (includes 65 cents), complete run of Special Delivery stamps boasting such premium singles like mint #E1 (no gum), E2 (no gum), E3 (no gum), E5, E6, E7 (NH), E8, E9, E10 (no gum), used #E4, followed by an equally impressive Postage Dues featuring such highlights like mint #J1 (no gum), J2 (no gum), J3, J4 (no gum), J5, J6, J7 (no gum), J15, J16, J17, J18, J19 (no gum), J20, J24, J25 (no gum), J26, J28 (no gum), J31, J32 (NH), J34 (no gum), J35 (no gum), J41, J42 (NH), J44, J48 (NH), J49 (no gum), J55 (NH), J56, J57, J66 (NH), J67 (no gum), used #J30, J33, J43, and more! Great option for anyone looking to bolster B-O-B portion of their USPS portfolio! Gen. VERY FINE, most mint og, some NH