CO-RET74 : 2016 Maxi-FDC Rep. Guinea/France "40. 1st flight Concorde Paris-Washington"

CO-RET74 : Maxi-FDC Republic of Guinea
Franked BLOCK 4 x 10.000FG “40th anniversary of 1st commercial flight Concorde / G-BOAE London LHR - Washington Dulles IAD 1976/2016“
Postmarked “First Day“ March 18, 2016

+ postal link France “1st commercial flight Air France Paris - Washington“
Franked tpp FRANCE 20g Green Letter “Concorde, 40 years Paris-Washington 1976/2016“
Postmarked in Strasbourg European Parliament “40 years 1st commercial flights Concorde Mach 2.02“ dated May 8, 2016 

Limited edition 40 copies
Rare