Mexico, 1868, 50c black on yellow, Maravatio. Cons 34-69, strip of 4, tied on piece by two negative "Acambaro" ovals (Schatzkes 721), ample to large margins, Very Fine, magnificent exhibition piece with Hidalgo's eyes peeking through in the postmark on each stamp. Scott No. 62  Estimate $1,000 - 1,500. $0 (Image)