Vietnam Airlines 17,20,21
Vietnam
Fold lines with English text:
17,20,21:
- paper
- open gusset
- tear off strip
- vertical tab on front
- straight cut
- manufacturer in the right gusset:
17: Tel: (84 4) 8.27008 
20,21: Tel: (84–4) 3827008 
20: distance arrows: 9,2 cm
21: distance arrows: 8,1 cm