Lot Of 11 Switzerland 1949 Infrastructure Stamps Used

Lot of 11 Switzerland 1949 infrastructure postage stamps, used and cancelled.

These stamps are ungraded, uncertified, and in good used condition overall.

Several stamps show visible back-side residue, discoloration, and possible paper adhesion or toning, as shown in the photos.

Please review the images carefully to confirm the exact stamps included in this collectible Switzerland lot.