1878 MAIL PHILADELPHIA TO LONDON WITH U.S. 10c, REDIRECTED WITHIN LONDON GB 1d PL.192 (SG43). Fine envelope from Philadelphia, U.S.A. to London with US 10c Jefferson, redirected within London to Soho Square with fine 1d pl.192 (SG43) lettered HH tied fine strikes 'LONDON-S.W/S.W9' duplex DE 7 78. Attractive and very scarce use US and British stamps. (Ref 144591).
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