1851 (Jul. 29) Glasgow, Scotland to Philadelphia, Pa., folded letter with red "Glasgow, Paid, Jul 29 1851" datestamp and red manuscript "8" rating for prepaid 8d outgoing ship letter rate, carried by Collins Line Arctic from Liverpool Jul. 30 to New York arriving Aug. 11, black "New-York 'Ship 7cts' Aug 11" cds for the 5¢ domestic rate to Philadelphia plus 2¢ ship fee, Very Fine, This Is the Only American Contract Steamship Voyage Known To Have Been Designated For Ship Letters Only, Only Three Covers Recorded From This Voyage. Estimate  $400 - 600. The British elected not to send a regular mail on this voyage of "Arctic", an American contract mail steamship of the Collins Line, because the NY & Havre Line "Humboldt" was departing the next day from Southampton for New York. Arctic's voyage was considered an extra voyage and carried ship letter only. $0 (Image)