Jaco - I don’t have any plain Czech boxes for this ammo, but many variations of labeled ones.
I do have a green box of typical Czech construction, but it is stamped on the top (or perhaps printed, although the line of markings is parallel to the box edges, making it look like a hand-stamping job) in red simply " 9 m/m 23/25" which I assume refers to the two different versions of the Czech Submachine guns of the period. The cartridges in it were headstamped ZV 56.
Just for the record, here is the identification of which factory made the ammo with which symbol, which applies likely to other calibers, such as 7.62 x 25 Tokarev, 7.9 Mauser, etc.
Zbrojovka Vlasim, národní podník: Circle, Diamond, triangle, bxn
Povázské Strojárne, národní podník, Povázská Bystrica: Four-dot cross,male figure, X, aym.
Edited to change an erroneous reversal of the identification of “bxn” and “aym.”
Regarding symbols: Reference, “the History of Small Arms Cartridge Manufacture in Czechoslovakia, Part III: Headstamps of Czechoslovakian Military Cartridges for Small Arms since 1918,” undated, by Vladislav Badalik, translated to English by Prof. Jiri Vojta.