San Luis Obispo County Balance. 70 plus 19th century covers from the 1850's thru the 1890's with early Adelaida, fine Arroyo Grande, Cholame fancy, fine Creston, Edna, 20th century Harmony (2), Huasna, Port Harford (3) and Simmler, F.-V.F., one of the most complete collections. Estimate  $1,000 - 1,500. $0 (Image)