Los 2421
Computer Vended Postage Stamps. 20th UPU Congress Washington DC 45 cents label from Machine nr. 11 on cover 20-11-1989 to Enns (Austria), fine (small fault caused by water at bottom). Everything else than the 25 cents on cover is very rare, and not listed in the Scott Specialized Catalogue. This cover has the correct Airmail postage to Europe.