Panama, 1852 (Oct. 31) San Francisco Cal. to Valparaiso, Chile via Panama, datelined folded letter with San Francisco blue "Paid" handstamp and red crayon "50" cent rating, transferred to British mails with red crown "Paid At Panama" handstamp and red crayon "1/-" rating, reverse with "Panama 'A' NO 23 1852" double-arc backstamp; carried by PSNC ship Quito from Panama Nov. 24th to Valparaiso arriving Dec. 12th. Estimate  $750 - 1,000. $0 (Image)