AR 4LA : 1979 - Env. ESA '1st launching Ariane L01' - slogan ESA

N°AR 4LA : Official envelope of the ESA '24 December 1979 - Historic day of the 1st launchinf of the rocket Ariane L01'
Special red slogan cancellation of the European Spatial Agency 'ESA European and heavy booster rocket Ariane'
+ commemorative handstruck mark of the 'ESA 24.12.79
+ mail connection 'European Council' overleaf

Extremely rare !