7.92x57 BT3 question


#1

Why does IAA website headstamp identifier say: " B T 3 Unknown Factory, Yugoslavia (actually Cyrillic letters VTZ )"? What is “unknown” about it?
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#2

So, let me re-phrase my question to get an answer. How many military factories are in Kragujevac?
en.wikipedia.org/wiki/Zastava_Arms


#3

Vlad, at least there is also “Remontni Zavod Kragujevac” code “P3K” (RZK).

And not to forget “AT3” (ATZ) which is the old name of “BT3” (VTZ).