139500 1917 MAIL LONDON TO DENMARK WITH DE LA RUE 2/6 DEEP YELLOW-BROWN (SG405) AND KGV 1D X TWO AND 2½D X TWO.

1917 MAIL LONDON TO DENMARK WITH DE LA RUE 2/6 DEEP YELLOW-BROWN (SG405) AND KGV 1D X TWO AND 2½D X TWO. Envelope from London to Aarhus, Denmark with good to fine De La Rue Seahorse 2/6 deep Yellow-brown (SG405), several shorter perforations, also KGV 1d x two (SG358) and 2½d x two (SG372), tied good to fine strikes 'LONDON/F.S.14' date stamps 3 JY 17. At left 'OPENED BY/CENSOR/1418' label. All De La Rue Seahorses used on cover are very scarce to rare. (Ref 139500).