Liberia, 1944-45, 30¢ on 3¢ Surcharge Airmail, Block of 18. Canceled by "Monrovia, Liberia, 15.7.1944" cds's on oversized cover to New York City, violet censor and U.S. customs handstamps; cover slightly reduced at right and stamps with some toning and wrinkle in first vertical row, F.-V.F., the Largest Known Multiple of the Scarce 1944 30¢ on 3¢ Airmail Issue paying the six times the 90¢ rate. Scott No. C48  Estimate $500 - 750. $0 (Image)