Question on Ref 212.30.41.20.01.002 Helium Escape Valve

Hey guys, I’m new here and I have a question I am trying to answer. Most examples of this reference seem to have a signed HEV. There is one available on EBay that has a HEV labeled simply “He.” Is that an OEM configuration or do you think that was an aftermarket replacement? The seller claims it is all original, which gives me pause. It is otherwise in good used condition.

Thanks!

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