1888 MAIL LONDON TO ISFAHAN, PERSIA WITH 5D GREEN (SG193). Envelope London to Isfahan, Persia with good to fine 5d green (SG193) lettered RC, centred slightly low but fine colour, tied fine strike 'LONDON.E.C.' hooded circle SP 3 88, codes 'X O.' 'Endorsed Via Vienna' and on reverse Teheran date stamp. (Ref 142355).
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