Postal cover.

Airmail envelope sent from Vienna (return label: Dr. Hans Friedmann, Stromstraße 18-20/6/10, A-1200 Wien). Three Austrian stamps tied by Vienna cancels dated January 15–16, 1980 (postmark shows 1200). Addressed to Chemical Abstracts Service, P.O. Box 3012, Columbus, Ohio 43210, U.S.A.; pink label reading "ABSTRACTS" and blue "FLUGPOST / AIR MAIL / PAR AVION" label present

Notes for Cover Collectors:
• High-resolution scans of front and back are provided; use zoom to inspect postmarks, cachet details, and backstamps.
• No third-party grading; condition is shown in the images.

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