Pan Am 1,8,12,15

USA

1:

• paper
• flat base with coversheet
• horizontal tab
• straight cut
• manufacturer on coversheet:

8,12:

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

            8:                               upside-down

          12:                               upside-down

15:

• glossy paper 
• flat base with coversheet
• horizontal tab
• straight cut