Not sure what it is but the material looks/feels like an enlarged black&white photo of ABBA.
Received from a popular weekly Norwegian magazine.

Item appears as seen on photos.
See photos!

Combined shipping provided when purchasing multiple items. Too large for an envelope, so I suggest tube. Shipped as regular unregistered letter unless other alternative requested before ended auction. Further responsibility after the parcel has been posted is disclaimed. Feedback on Tradera is given after receiving from buyer.