U.S.A. (1949) Helicopter*. First Flight envelope United States Airmail LService via Helicopter - First Flight A.M. 96 - Chicago Area. Signed by pilot.
$10
BELGIUM (1956) Helicopter. First Flight letter Sabena/Brussels to Duisburg.
$10
FRANCE (1957) Etienne Oehmichen. Maximum card with thematic cancel. Inventor of helicopter. Scott No 824, Yvert No 1098
$10
SWITZERLAND (1972) Alpine rescue helicopter*. Maximum card with First Day cancel. Scott No 553, Yvert No 907.
$3
(Image b)
$25
F.S.A.T. (1981) Alouette II helicopter*. Unaddressed FDC with cachet. Scott Nos 95-6, Yvert Nos 92-3.
$15
EAST GERMANY (1985) Helicopter lifting electric cables*. Maximum card with thematic cancel. Scott No 2498, Yvert No 2593.
$5
RUSSIA (1987) Helicopter. 5 kop entire (N) with corner illustration and motto "Courageous and Adventurous Sport."
$5
VIETNAM (1988) Helicopter*. Oil platform*. Imperforate S/S. Scott No 1956, Yvert No BF41.
$10
VIETNAM (1989) Helicopters*. Set of 7 imperforates. Scott Nos 1949-55, Yvert Nos 869-75.
$10
FRANCE (1970) Helicopter*. Mountaineer*. Motos*. Patrol boat*. Philatelic First Day document with special engraving thematically related to the stamp and printed description and explanation of the stamp on the reverse. National Gendarmery. Scott No 1264, Yvert No 1622.
