Lot
1716 
Guadalajara, 1867, 4r black on rose, serrate perfs, first period, tied by "Guadalajara, Mayo 17, 1867" oval date stamp on folded letter sheet to Leon; some light cover edge wear, otherwise Very Fine, very rare with only three covers known, first experiment serrating stamps of this issue lasted just a few weeks, most were 2r, 1r, 4r and 1p exist in tiny amounts; with 2024 M.E.P.S.I. certificate.Scott No. 12 Estimate $1,500 - 2,000.
Realized: $1,450