Mexico, 1868, 100c black on brown, quarter used as 25c, Lagos. Imperf, upper left portion of stamp tied by full bold Tepatitilan oval handstamp (Schatzkes #689) on cover front to Guadalajara, undated, Very Fine, one of two recorded genuine 100c quarter splits on cover or front, with photocopy of a Tepatitlan 100c vertical bisect cover, confirming the use of splits in from this small town; with 1975 MEPSI certificate signed by John Bash stating that it is not possible to tell whether the stamp is a Scott #50a or a 64c. Scott No. 64c  Estimate $2,000 - 3,000. $0 (Image)