The "60 96" might be still the well known Bishkek Machine Building Factory "BMZ" in Bishkek (Frunze in Soviet times) in Kyrgyzstan.
According to the factory they were still producing ammunition in 1997 (and maybe still do).
The script of the "9" used here corresponds to the one observed in recent years on cartridges throughout the former Soviet union like:
- 270 97
- 61 04
- 7 99
- "Armenian script" 97 (recently we had the similar hs here on a 7.62x39 with "00" date for ID)
Means it might be that the bunters are supplied by one and the same company which might be KBAL which is the sole producer of ammunition production machinery in Russia.
Remark: Tula Cartridge Factory is not using this script.