CH 2011 Stamp Day Sierre VS, postal card used as a maximum card cancelled 11.12.2011 3960 Sierre

Switzerland 2011 Stamp Day Sierre VS,
official postal card of Swiss Post (postal stationery) 
"Lithographie von 1895 zur Verfügung gestellt von Marc-André Elsig -
Lithographie de 1895 mise à disposition par Marc-André Elsig -
Litografia di 1895 per gentile concessione di Marc-André Elsig -
Lithography from 1895 kindly provide by Marc-André Elsig",
Image side: Sierre - Hôtel Château Bellevue,
with printed franking, without address, cancelled "11.12.2011 3960 Sierre - Journée du timbre",
used on the front as a maximum card with a matching special stamp for Stamp Day 2011 (SBK 1412A, Michel 2232),
cancelled "11.12.2011 3960 Sierre - Journée du timbre", luxury conservation.