Soviet mystery item

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Hey!

New one in the forum but a collector and also a historian here. Couple weeks ago I bought a "trenchchest" which was property of Lieutenant colonel Lahja August Oksanen. They guy was a jaeger (jääkäri) who was in Germany during the ww1, had a proper military training and came to Finalnd to fight in civil war. Anyway the chest was full of different items and I indentified most of them. Only one still remains mystery. It is this soviet pouch. Cyrillic letters reveals it (in latin letters the text means VL-62). So any soviet militaria experts to tell me what it is?

PS. Measures: Height: (pouch closed) 17 cm; Width: 11 cm

Thanks and Cheers!