United Airlines 9,22,23

USA

 9:    3 instruction lines

• paper
  
• flat base with special fold
  
• horizontal tab
• thumbhole
  
• straight cut
• manufacturer on base:

                      upside-down

22,23:    4 instruction lines

• glossy paper
  
• flat base with special fold
  
• horizontal tab
• thumbhole
  
• straight cut
• manufacturer on base:

          22:      upside-down

          23:      upside-down