CH 2006 Stamp Day Olten SO, society cover cancelled 10. Dezember 2006 4600 Olten with add-on cancellation Eisenbahnstadt (Postal stationery B-Post)

Switzerland 2006 Stamp Day Olten SO,
society cover "OLPHILA 06 - Olten - 150 Jahre Eisenbahnstadt Olten - Tag der Briefmarke 8.-10. Dez. 2006 - Journée du Timbre - Giornata del Francobollo",
with oval red add-on cancellation "150 Jahre Eisenbahnstadt Olten", document no. 028,
with printed franking "B-Post" (Postal stationery), without address, cancelled "10. Dezember 2006 4600 Olten - Tag der Briefmarke 2006", luxury conservation.