DP-27 disku kaste / DP-27 ammo box

[Vīndedzis]

Labdien.
Šāda kaste no bēniņiem. Visai labi saglabājusies un redzams ka tikusi arī pārkrāsota.
Interesē noskaidrot- ko varētu nozīmēt tie krāsā ieskrāpētie burti (šķiet,ka "ГКМ"),un ko nozīmē korpusā iespiestais "M" burts?

Вложения

[juss]

Looks like WW 2, ``M`` visible there as developer.

[Vīndedzis]

Looks like WW 2, ``M`` visible there as developer.

As it has become clear, the marking "M" stands for producer "мастерские тяжелой артиллерии «мастяжарт» ".
The meaning of the letters scratched into the paint is still unknown.

[juss]

Well.
And one `milicija buckle `, made early 50xx have too marking `M`, like on this box.

Вложения