There are no heat stamps, only a tag inside the bag. See 1st photo.
http://i129.photobucket.com/albums/p202/Christiflora/LVtag1.jpg
http://i129.photobucket.com/albums/p202/Christiflora/IMG_0162copy.jpg
http://i129.photobucket.com/albums/p202/Christiflora/IMG_0148copy-1.jpg
http://i129.photobucket.com/albums/p202/Christiflora/IMG_0147copy.jpg
http://i129.photobucket.com/albums/p202/Christiflora/IMG_0158copy.jpg
http://i129.photobucket.com/albums/p202/Christiflora/IMG_0158copy.jpg
http://i129.photobucket.com/albums/p202/Christiflora/LVtag1.jpg
http://i129.photobucket.com/albums/p202/Christiflora/IMG_0162copy.jpg
http://i129.photobucket.com/albums/p202/Christiflora/IMG_0148copy-1.jpg
http://i129.photobucket.com/albums/p202/Christiflora/IMG_0147copy.jpg
http://i129.photobucket.com/albums/p202/Christiflora/IMG_0158copy.jpg
http://i129.photobucket.com/albums/p202/Christiflora/IMG_0158copy.jpg