CH 2010 Stamp Day Münchenbuchsee (Bern) BE, postal card used as a maximum card cancelled 05.12.10

Switzerland 2010 Stamp Day Münchenbuchsee (Bern) BE,
official postal card of Swiss Post (postal stationery) 
"Lithographie zur Verfügung gestellt von Paul Bächtiger -
Lithographie mise à disposition par Paul Bächtiger -
Litografia per gentile concessione di Paul Bächtiger -
Lithography kindly provide by Paul Bächtiger",
Image side: Gruss aus Bern - Schlumpf Winterthur,
with printed franking, without address, cancelled "5. Dezember 2010 3053 Münchenbuchsee - Tag der Briefmarke", 
used on the front as a maximum card with a matching special stamp for Stamp Day 2010 (SBK 1372A, Michel 2182),
cancelled "5. Dezember 2010 3053 Münchenbuchsee - Tag der Briefmarke", luxury conservation.