One would think these would be easy to find being that the same ones were used on many models but not the case.
Probably not a concern to judging as I doubt they are scrutinized but original or NOS will function as intended.
Beware of some on the auction site claiming their NOS. I can tell the difference.
When they are individually packaged you can't go wrong, but I also have some purchased years ago that are nos but unpackaged.