(San Diego) Tia Juana, 2-27-1880, manuscript postmark (Williams unlisted, new SAN-6545) on manuscript canceled 1876, 3¢ green entire to Brockton, Mass.; small tear at top affecting postmark, still Very Fine, the unique manuscript postmark from Tia Juana and the earliest known usage from this town. Estimate  $200 - 300. $0 (Image)