5 Fr. gray black with overprint "fortress Lorient" on postage exceeding tariff rate local letter from Groix (main place on the of the same name island in the Atlantic), posting postmark manuscript "1944 in 1945" modified, only issued 30 piece - registers are to this day, only 8 covers (7 single frankings and a mixed franking), documents with this stamps are extremely rare, signed Pickenpack and Zierer, certificate with photograph Pickenpack and current certificate with photograph autumn VP (2014) : "the condition is perfect. ", Michel 7. 500.-