cover 1816-40 entire letters (4) and entires (2) from Nassau (5) or Galloway, Long Island, addressed to London (5) or Glasgow, variously rated and showing different GB ship letter handstamps comprising "SHIP LETTER/DOVER" (S12) in red, "Gravesend/Ship Letter" (S9), "LIVERPOOL/SHIP LETTER" (S13), "SHIP LETTER/LONDON" c.d.s. in red, "PENZANCE/SHIP LETTER" (S4) and step-type "PORT GLASGOW/SHIP LETTER". Generally fine