Guadalajara, 1867, 4r black on blue thin wove, without gum, clear to large margins, fresh and Very Fine, maybe 10 singles exist mint and used; with 1998 MEPSI certificate. Scott No. 18A  $500. $0 (Image)

Guadalajara, 1867, 4r black on blue thin wove, neat oval cancel, margins large to touching at top, Very Fine, a very rare used provisional issue, maybe 10 exist, most are unused. Scott No. 18A  $1,000. $0 (Image)