Lot 60122 – 1850 cover to France showing markings of all three

1850 cover to France showing markings of all three Guianas: GUYANE FRANCAISE from Cayenne in French Guiana, transit of PARAMARIBO in Dutch Guiana, and DEMERARA DE 9 1850 of British Guiana, sent by Royal Mail service and with ART 13 accounting hs on face. Charged 15 decimes in France on arrival. Very unusual (mentioned in Townsend and Howe at pages 202-203, stated only two such covers known)