27:

Air China 15,17,24,27,29,33,34,36

China

 

paper bag

flat base with coversheet

tear off tab

15,36 topside down , 27 normal : manufacturer in the right

straight cut

 

 

 

27,15,24:

different "R"-types  and tab

 

29: same front as 15 but Fold at backside and diff. tab backside:

15,34:

17:same front as 24 but Fold at backside and diff. tab backside:

24:

33: