Lot
1672 
Mexico, Airmail, 1929 50c dark blue & claret, imperforate, o.g., lightly hinged (minor gum wrinkles), large margins in sheet margin at left, bright colors, small thin in right margin, otherwise Very Fine and rare; with 2025 M.E.P.S.I. certificate.Scott No. C1a var. Estimate $300 - 400.
Current Opening Bid: $300
Lot
1673 
Mexico, Airmail, 1922 50c blue & red brown, complete sheet of 50 with control cuts in top & bottom margin, o.g., never hinged, Very Fine and rare.Scott No. C1; $8,000 as singles Estimate $1,500 - 2,000.
Current Opening Bid: $750
Lot
1674
Mexico, Airmail, 1928 25c brown carmine & brown, perf. 14, proof, o.g., never hinged, fresh & Fine; signed Sanabria. Sanabria No. 6.Estimate $300 - 400.
Current Opening Bid: $150
Lot
1675 
Mexico, Airmail, 1928 25c brown carmine & brown, perf. 14, proof, tied on first flight cover "Mexico-Nuevo Laredo" with violet flight cachet by "Servicio Aereo Monterrey 1 Oct. 28" postmark to Mexico City, Very Fine and rare. Sanabria No. 6.Estimate $500 - 750.
Current Opening Bid: $325
Lot
1676
Mexico, Airmail, 1929 25c Airmail proofs, o.g., some with hinge remnants, Sanabria #15 & 15 imperf., Very Fine and rare complete set; each with 2025 M.E.P.S.I. certificate. Sanabria No. 8-16 $4,500.Estimate $750 - 1,000.
Current Opening Bid: $625
Lot
1677
Mexico, Airmail, 1929 25c brown carmine & slate green, proof, two "Mexico-Tijuana" flight covers with violet flight cachet with others values tied on flight cover by "Servicio Aereo Mexico 29 Jul 29" postmarks, one cover rough at left edge & other with mend corner cover tear, also included is third cover franked with 1929 25c green & brown, Imperf. Proof (Sanabria #15) + 1923 10c Orange Imperf. Trial color Proof Pair tied on airmail cover to New York City, some cover staining with, Very Fine and rare, See footnote after Scott #C4, ex-E. Koenig; each with M.E.P.S.I. certificate. Sanabria No. 8.Estimate $500 - 750.
Current Opening Bid: $250
Lot
1678
Mexico, Airmail, 1929 25c brown carmine & slate green, proof, tied on flight cover "Mexico-Tijuana" with violet flight cachet by "Servicio Aereo Mexico 29 Jul 29" postmarks to Tepic, Very Fine and rare, See footnote after Scott #C4, ex-E. Koenig; with 1995 M.E.P.S.I. certificate. Sanabria No. 8.Estimate $300 - 400.
Current Opening Bid: $150
Lot
1679
Mexico, Airmail, 1929, 25c brown & green, perf. 12, proof, block of 4, o.g., never hinged, Very Fine and scarce. Sanabria No. 12 $1,000 in 1960.Estimate $200 - 300.
Current Opening Bid: $575
Lot
1680
Mexico, Airmail, 1929-34, 35c blue green, imperforate, top margin single, o.g., stamp never hinged, hinged in selvage only, fresh color, Very Fine and scarce, imperf. pair cats $1,250.Scott No. C15a Estimate $100 - 150.
Current Opening Bid: $120
Lot
1681
Mexico, Airmail, 1934, 20c-10p National University, o.g., lightly hinged, bright colors, F.-V.F.Scott No. C54-C60 $885.
Current Opening Bid: $80