San Juan, Cal., May 8 (Monterey). Manuscript postmark on 1851 folded letter sheet addressed to Secretary of State W. Van Voorhies in San Jose, additional "Paid" and "12½" rate at top, date docketing inside, Very Fine, the earliest known postmark from San Juan and the only 12½ rate usage known from this town, with usage prior to San Juan's postmaster confirmation on July 28th. Estimate  $750 - 1,000. $0 (Image)