Mexico, 1861, 1r black on green, Aguascalientes. Horizontal pair, right stamp with "Aguascaltes" short district overprint, large margins, canceled by mute "0" cancels on fresh 1864 folded letter sheet, neat Aguascalientes box date stamp at top, Extremely Fine, only 400 sent in the 1864 shipment. (NF$250 for singles), ex Heiman. Scott No. 7  Estimate $400 - 600. $0 (Image)

Mexico, 1861, 1r black on green, Aguascalientes. Horizontal pair with short district overprint, canceled by central "0" cancels on 1864 folded letter sheet, Aguascalientes boxed date stamp at top; cover with small light water stain at right, Very Fine, a rare usage (NF as singles $300). Scott No. 7  Estimate $300 - 400. $0 (Image)

Mexico, 1861, 1r black on green, Aguascalientes. Vertical pair with long district overprint, canceled by light grid cancel on fresh folded letter sheet, boxed Aguascalientes date stamp below, Very Fine (NF $150 as singles). Scott No. 7  Estimate $150 - 200. $0 (Image)