I just had a good look, can't see the broad arrow. NZ helmets also had a raw edge and used Australian liners (including Dunlop) I can't make out a clear CS (only perhaps a very faint, outline, quite a bit smaller than the batch number but I cant be sure) I agree with you on the helmet being Aussie though on that I cant see the nPz stamp - I'll have to take a proper look with the liner out (speaking of which, how do I go about removing the liner?)
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