Chile 1861 10c pale blue Colon Bisect Folded Cover CURICO Straight-Line

Folded cover, without contents, franked with 10c pale-blue Colon, diagonally bisected to pay the 5c domestic rate, tied to cover to Santiago by bold target cancel, choice strike of italicized CURICO straight-line in black (MPF12a), light horizontal filing fold clear of adhesive, some light overall aging, a scarce and desirable usage.