1864 TRANSATLANTIC MAIL LONDON TO USA WITH COMBINATION OF GB AND US STAMPS. Wrapper London to Kennebunk, Maine with GB 1s green (SG90) lettered BB tied London numerals, stamp paying the 1s treaty rate and carried on Inam Line "City of Edinburgh" and then forwarded to Kennebunkport with US 3 cent cancelled 10th December. Internal repair but a very unusual and very scarce usage. (Ref 98401).