SAB57-H2 T3 : 1957 - FDC '1st flight by helicopter SABENA Bruxelles-Paris'

N°SAB57-H2 type 3 : Special FDC travelled on the '1st regular flight by helicopter SABENA BRUXELLES-PARIS" Aerial transit at departure from Saar under temporary French administration.
Postage (type 3) serie 2 val. 12F+3F, 15F+5F 'Olympic Games from Melbourne 1956' (YT 353/54)
Cancellation St. Ingbert (Saar) 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.