San Diego County Postmark Collection. Approximately 600 covers and cards; most 20th century to modern with some commemorative unaddressed covers; some 19th century including 1893 Ballena, Chula Vista, Nuevo, Orcutt, 1883-99 San Diego, early 20th century including town scene postcards, real photo (no photo). Estimate  $400 - 600. $0