visor cap identification, please help

[casey76]

anybody knows this visor cap? I think it could be from WW1?
cap is in good condition. visor and sweatband has solved but it would be no problem to resew I think

[casey76]

1

[casey76]

1

1

[casey76]

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1

[Seb777]

30' era ???

[casey76]

no idea to this cap? perhaps HJ?

30' era ???