Pacific Union, Kernville, red Pacific Union frank (PAU-001) with a manuscript "P. U. Exp Co./Kernville Sept/21 68" cancelling on 1864, 3¢ pink entire to San Francisco, receiving date stamp and docketing on reverse; few filing pinholes affecting frank, otherwise Very Fine, the only known example of a Pacific Union from this location. Scott No. U58  Estimate $500 - 750. $0 (Image)