RKKA leave mark - tag, 6th communication regiment, early type.

RKKA leave mark - tag, 6th communication regiment,  У.В.О. (Украинский военный округ) - Ukraine Military District. Early type tag, it looks like Imperial Russia tag. It's a fact that at the beginning of 20'th in Red Army were still  used  fieldgear  and personal items from old military stocks of Imperial Russia.