EC 135 cyclic-stick weird inscription

[sevtec]

Howdy!
Sorry for my lame question but I'm one of EC135 paramedic crew and I just found some white mark on pilot's cyclic-stick with following inscription:
"CV2" with "W" letter below, all in white square.
What does it mean exactly?
Any quality control mark, or individual part signature?

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[cattletruck]

My big guess is it has something to do with the buttons on the grip, a model designator perhaps.

[RotorDompteur]

Ask your pilot

[Art of flight]

Reminds me of my introduction to the apache D, asked the instructor what the 'pig' switch was for, he answered it couldn't be that important as he hadn't used it in the 5 years he'd been flying them and not sure he ever knew what it was........

[mdovey]

And what is the pig switch for?

[Greeny9]

Exact same markings on AS365N3 also so would imagine it is a modification standard marking for the functionality of the hand grip.