Airmail cover from Langenbruck, Switzerland to the Documentary Film Company, Films Afield in Boise, Idaho, U.S.A.. The cover bearing a 1986 1.40fr multicoloured Gemini & Bischofszell from the Zodiac Signs and Landscape Series, Scott 719A tied by a Lausen circular date stamp with slogan “Der Ferienort im Baselbiet” (“The holiday resort in the Basel region”).
Blue “By Air Mail / Flugpost Par Avion” etiquette at upper left; sender imprint KEB-Zentrum, Kilchzimmer, Langenbruck. Address typed with manuscript correction to ZIP code.
Notably returned to sender, showing bold red straight-line “ADDRESS UNKNOWN” and boxed “RETURN TO SENDER” handstamps, with manuscript obliteration of address an attractive and collectable postal marking combination illustrating a correction of what was thought to be an unsuccessful delivery.
The 1.40fr rate corresponds to international airmail letter postage to the United States in the late 20th-century period.
Condition: Fine; minor transit wear, clear strikes of auxiliary markings and slogan cancel; stamp well tied.
An appealing modern Swiss returned cover, combining tourist slogan cancel and instructional postal markings.