SAB57-H2 T2 : 1957 - FDC '1st flight by helicopter SABENA Bruxelles-Paris'

N°SAB57-H2 type 2 : Special FDC travelled on the '1st regular flight by helicopter SABENA BRUXELLES-PARIS" Aerial Transit at the departure from Saar under temporary French administration.
Postage (type 2) serie 3 values 5F+2F, 12F+3F, 15F+5F 'Winterberg, Reconstruction funds of the Sarroi monuments' (YT 355/57) and pair 3F 'President Heuss' (YT 364)
Cancellation St. Ingbert (Sarre) 27.2.1957
+ black authentification postmark of the flight '1st line Bruxelles-Paris SABENA HELIPOST 3.3.1957'
+ arrival slogan postmark Paris 'North station' 3.3.57 overleaf.