Strange unknown M1 looking helmet

[Narcis]

Hi,
Seen in "De Oost" (The East) (2021). The KNIL in Indonesia, in 1946.
Should be a M1, but looks more like an Iraqi M80. The chinstrap is also unknown to me.
Can anybody recognize that helmet?
Thanks,
Luc

[Tinhat]

The cluster of three rivets for the chinstrap point to it being an M80, the chinstrap should be an M1 copy on an original helmet.

[Greg Pickersgill]

The basis of what we think of as the Iraqi M80 is a widely exported South Korean helmet, which was also used by Indonesia, who also made their own version. If this was shot there - which strikes me a somewhat surprising - they would be easily obtained. Mind you the helmet was/is also used all over South Americ and SouthEast Asia. See various pages Composite Helmet, Ballistic helmets, Military helmets INDONESIA, INDONESIAN helmet, Kevlar helmet composite helmets index

[Composite]

What a strange Prop choice for a modern movie......I guess M1s are a lot rarer than we all think ;-)

[Narcis]

I understand those helmets were not existing in 1946!
But the movie, a pamphlet against the Dutch colonial policy, was shot in Indonesia: helmets and guns were probably provided by the Indonesian Army.
Thanks for your comments.
Cheers.