M5A1 bayonet, please help identify: purple blade no serial. Haitian?!

[MadMechaNick]

Hi, I bought this bayonet sight unseen and didn't notice the plum colored blade in the pics. I then noticed the lack of manufacturer stampings and the phillips screws. From what I can find online it has all the markings of a German A.E.S. for Haiti blade EXCEPT no Haitain serial number engraved on the blade. Do these exist without that serial number? If not any idea of the maker/authenticity of this bayonet? I tried to capture the plum color as best I could but it's far more obvious in person. Like the color of an SVT-40 bolt carrier.
Thanks in advance!

https://imgur.com/a/G3Uolir

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