k.u.k. - kaiserlich und kniglich - German

Cs.(Csszri) Es Kir.(Kirlyi) Udvari Puskamves - Hungarian
seen on Jozsef Kirner

Recap and to add Polish version:

C.I.K.(Cesarsko-Krlewski) Nadworny Dostawca - Polish
as seen on Alfred Dzikowski of Lemberg(Lwow/Lviv) examples

Kind Regards,

Raimey
rse