#68 10c Green, on "Stand by the Union" Patriotic Cover to California

Addressed to Samuel Howard Gerrish in Vallejo, California. With a PF Certificate which states, "SINGLE, GRID CANCEL, ON PATRIOTIC COVER TO VALLEJO CA, SPRINGFIELD MA PMK AT BOTTOM LEFT. AND WE ARE OF THE OPINION THAT
IT IS A GENUINE USAGE; THE STAMP HAS TWO LIGHT HORIZONTAL CREASES THE COVER WITH A SMALL STAIN AT CENTER"