Chile 1858 10c Colon Cover Front QUILLOTA Straight-Line to Santiago

Cover front, franked with 10c deep blue Colon, mostly four margins all around, just touching in places,tied by black target cancel, struck with choice straight-lie QUILLOTA straight-lie (MFC31b), to Jos Miguel Aristegui, Vicar General of the Archbishopric, a most attractive example of this scarce postmark.