.30 Carbine E C 4 headstamp with wood bullet

90 grains.
100% NON magnetic.

I would say a Norwegian Blank made with US case.
From Guns Review, Dec. 1996:


Dan

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Definitely Norwegian. I have these in my collection with headstamps L C 4, L C 51 and WRA * 45. Mine came out of Norway.

John Moss

Acquired a 30 carbine blank head stamped FN 55 flat primer 3 stab triangles with green wood bullet held in place with 3 indentations.

Ok, cataloged it in as Norwegian manufacture.