G,B, Post & Co., San Francisco, sharp full strike of framed forwarder's handstamp and "Per Bark 'Yankee'" straightline handstamp on folded printed price current with Manila, Philippines, May 4, 1855 dateline, addressed to Doench & Stapenhorst in Honolulu, carried entirely outside the mails, no government postal markings, extremely fine, this superb example of the rare "Yankee" name- of-ship marking comes from a correspondence never before offered in the philatelic market