For the moment: the Rayon I is position 31 in the sheet.Rayon II is position 34.
So there is good chance they are genuine.
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The two Orts post are the same stamp positions. Very good chance they may be genuine.
One can only go so far from an image.Even if they have the same characteristics it does
not mean they are genuine.they could be photo lithographed forgeries.Below your stamp
next to a Genuine stamp in this auction.It is the same type.Better if you post some
better pics of each stamp next time.
https://www.cherrystoneauctions.com...=SWITZERLAND____________________________________________________________________________________
The Poste Locale is position 7 in the sheet (
same caution as above)

The FRANCO could very well be Forged.That puts less credibility on the stamp also.

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A Genuine Fournier Forgery below.His forgery does not correspond to any position in the sheet.(Stamp + Cancel)Fournier forgeries of the Rayon have a certain value though.
