CH 2003 Stamp Day Bern BE, postal card cancelled 7. Dezember 03 3000 Bern used as a maximum card

Switzerland 2003 Stamp Day Bern BE,
official postal card of Swiss Post (postal stationery)
"Tag der Briefmarke 2003 - Bern - Zibelemärit -
Journée du timbre 2003 -  Berne - Marché aux oignons -
Giornata del Francobollo 2003 - Berna - Mercato delle cipolle",
with printed franking, without address, cancelled "7. Dezember 03 3000 Bern - Tag der Briefmarke 2003",
used on the front as a maximum card with a matching special stamp for Stamp Day 2003 (SBK 1103, Michel 1859), luxury conservation.