Lot
408 
Mexico, 1890, Numeral, 1c green, with 1890, Numeral, 4c vermillion (215) on a very rare cover from El Rosario to New York, mute cancels and a unique postmark "Amortizado" in blue, Very Fine, an article in Mexicana discussed this cover, no one knows the origin or meaning of this unique postmark.Scott No. 212 Estimate $200 - 300.