Puerto Rico, Airmail, 1940, 1c-$1 Aerovias Issue Complete, tied by purple oval "Mayaguez, Puerto Rico, Aerovias N.P.R. Inc." handstamps with "Mar 22, 1941" at top, on legal size airmail cover to New York City, similar San Juan flight cachet, in combination with U.S. Airmail 10¢ Map issue tied by "San Juan, P.R., Mar 23, 1941" duplex postmark, Very Fine and scarce. Sanabria No. S8-S15  Estimate $200 - 300. $0 (Image)