Mexico, Proofs & Specimens Collection, 1864-1903. Interesting group of items, including 9 1864 Hidalgo color trial proofs, 3 Hidalgo 1874 head vignettes, 1899-1903 Coat of Arms to 5p with muestra overprints and another set with both muestra and specimen overprints; and 3 additional items; seldom seen material for the specialist. Estimate  $750 - 1,000. $0