(United States Consular Office, Panama) Panama N.Y. Jun 10 (1850), cds and matching partial strike of "30" rating handstamp for the 30¢ American packet rate from Panama on buff cover addressed to Senecaville Oh., probably carried on the Empire City Line Crescent City leaving Chagres June 14th and arriving at New York on June 24th; some edge flaws and separation, Fine, ex-Jessup. Estimate  $750 - 1,000. THE EARLIEST OF ONLY 12 RECORDED EXAMPLES OF THE U.S. CONSULAR OFFICE AT PANAMA POSTMARK. Between June 10th and July 21st 1850, the United States Consul at Panama, Amos B. Corwine is recorded as applying the "Panama N.Y." circular datestamp on letters handled by his office. $0 (Image)