Lot
673 
Conejos, Colorado, Nov, cds on 1870, 3¢ green entire to Napoli, Italy, uprated with 1870, 1¢ ultramarine + 3¢ green, horizontal pair tied by target handstamps, red New York exchange cds and receiving backstamp; tiny margin tear in left 3¢ stamp, otherwise Very Fine, a very rare unlisted example of the single circle date stamp from Conejos, quite possibly unique. Estimate $300 - 400.
This is a confirmed territorial usage as the 10¢ Italian closed mail rate was in effect from 1871 to 1874.
Realized: $260