GJ.TAR-98, sent to Antarctica in the 1981/82 Campaign to the Tte. Matienzo station, with cancels of the base and returned to Buenos Aires on 6/MAY/83, VF
GJ.TAR-100, uprated, sent to Antarctica in the 1981/82 Campaign to the Alte. Brown station, with cancels of the base and of 80th anniversary of first Antarctic mail, VF
Cover sent from icebreaker 'Almirante Irizar' to Buenos Aires on 25/DE/1991, with handstamps 'Correspondencia Helitransportada' + 'Correo Despachado a Bordo', arrival backstamp, very fine!