Delta 767 Cardboard

Right after high school I took a summer job working for Delta loading bags. When I was in training I noticed this old 767 cardboard cut out on a pile of old stuff. I was told if I wanted it I could have it. I think I remember seeing one hanging up at a travel agent office when I was a kid but have not been able to find one online and have no idea what it's worth. I was hoping someone could tell me more about it and maybe how rare or common it is. Thanks!