Help needed identifying lens boards

[Qoppa]

Hello everybody,

I kindly ask for your help in identifying these three lens boards. I attached some photos, please see below. I would like to know which enlarger they are originally come from and/or can be used with. They came with some loose darkroom equipment I picked up, but nothing in there made it clear where these belong to. Your help is very much appreciated!

Kind regards

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[Qoppa]

Here are some photos from the back of the lens boards.

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[Vaidotas]

Looks like DeVere enlarger lensboards.

[pitotshock]

Those are the Devere 5 series enlarger lens boards. I'm looking for some for my 504 at the moment...