Lot
588 
Mexico, Airmail Official, 1932, 50c dark blue & claret, "Servicio Oficial" overprint, o.g., lightly hinged, rich colors, very fresh, F.-V.F.; with 2000 M.E.P.S.I. certificate. Scott No. CO18 $1,000.
Sale 85: The Westpex Sale
Airmail Officials, Postage Due & Porte de Mar
Lot 588
Mexico, Airmail Official, 1932, 50c dark blue & claret, "Servicio Oficial" overprint, o.g., lightly hinged, rich colors, very fresh, F.-V.F.; with 2000 M.E.P.S.I. certificate.Scott No. CO18 $1,000.