Un r. on blue, thin oblong quadrillé paper, unused vertical pair, stuck on entire letter with another pair which has been cancelled with infinity handstamp, from Guadalajara October 15, 1867 to Mexico City; correct postage for a letter between ½ and ¾ ounze of weight All stamps in fresh colour and with large margins. The uncancelled pair is the largest unused recorded multiple of this stamp, of which only one single unused copy has been recorded. A great rarity. Certificate MEPSI (1998, stating that the committee is not able to give an opinion as to whether the uncancelled pair belongs to this cover)
