East German 7.62x39 Lined Mark Meaning? - General Ammunition Discussion - International Ammunition Association Web Forum

I have these three 04/63 east German 7.62x39 with these lines at the three in 3’s grouping. Is there some meaning to these lines. Thank you ! Philip

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East German 7.62x39 Lined Mark Meaning? - General Ammunition

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East German 7.62x39 Lined Mark Meaning? - General Ammunition