what switch is this? From a vintage Wang board

[winteralfs]

Here is a close up shot

[-Jerry-]

Any model identifier? Might narrow it down.

At least one Wang used Alps SKCL/SKCM switches, but those stems have nubs further down the side, not in the corners. The SKFR/SKFS switches have corners like that, but with a raised section in the middle. I think Alps 'common mount low profile' (or SKFM/SKFN if you prefer) match these closest, but as far as I can find, there weren't any pale blue ones, so these might be clones.

[winteralfs]

Thanks, here are some more pics.

[-Jerry-]

That’s interesting, the only examples I can find for 725-4500 boards had Pink SKCM switches. That said, they seem to be fairly rare (at least I can’t find many listings for them and DeskAuthority doesn’t have a page for them) so it’s entirely possible only those ones have ever come up for sale.

Are the switches under the alpha keys the same?

[Findecanor]

https://deskthority.net/wiki/SMK_Alps_mount

(The article lumps clicky and non-clicky together, but all blue should be clicky)

[winteralfs]

I will try and take more pics. Could they be Monterey Blues?

[-Jerry-]

https://deskthority.net/wiki/SMK_Alps_mount

[winteralfs]

Do you think those are PBT keycaps?

[-Jerry-]

Do you think those are PBT keycaps?

Since other boards of the era from Wang had dye-sub and double dye-sub PBT keycaps, it seems likely.

[Rob27shred]

https://deskthority.net/wiki/SMK_Alps_mount

(The article lumps clicky and non-clicky together, but all blue should be clicky)

Definitely what the switches are, Monterey Blues. I got a batch for a 660 style SMK build & they are identical to the one OP pictured.

[winteralfs]

Do you like the Monterey blues? How would you compare them?