many thanks for your reply.
On label,the site indicated :
"Three different labels are shown, printed on different materials is the information of patern dat and the company name with its purchase order date. Note that the pre 1942 labels do not show the "Jacket, Field, o.d." nomenclature"
It seems to me all right.
and on zip :
"These are the Talon zippers (nickel coated), Crown zippers (zinc coated), and the Conmar zipper (gilt coated) "
for me it is not correct because on this forum I read that Kwik produced zip also in the war period.