6,7,9,10:

Bulgaria Air 6,7,9,10

Bulgaria

 

6:

paper bag 

flat base with coversheet

straight cut 

 

10:

glossy paper bag 

flat base with coversheet

straight cut

 

7:

glossy paper bag 

flat base with coversheet

in the left:

straight cut 

6,7,10:

9: "Bulgaria Air" at both sides

glossy paper bag 

flat base with coversheet

in the left:

straight cut