It is a picture of eBay.
It is not my picture. I'm sorry.
It is the keyboard same with Sun Type3 made from OAK.
It seems that OEM was also made IBM although this structure had not been seen by others.








http://www.ebay.com/itm/like/261404179268

Shit, that is super cheap! It will go fast.

It has shortly been discussed in the interesting find thread. CeeSA posted the ebay link there.
marketplace-f11/great-interesting-finds-gh-has-one-why-not-us-t5700-720.html

I wonder if the innards of a buckling spring IBM PC/XT fit in that industrial case.

Ninje! Anyway, It failed to sell that time. Oak doesn't have many fans…

marketplace-f11/great-interesting-finds-gh-has-one-why-not-us-t5700-720.html#p148444

Didn't someone already say the case is differently constructed underneath, so buckling spring is almost certain not to fit?

I once heard the claim made (can't remember where) that the Model F's capacitive sensing was too sensitive for use in industrial settings (either due to contamination or temperature issues), so perhaps the linear switches were used because they were more tolerant of sensitive environments? If the keyboard cases were designed specifically for these Oak assemblies, that would further suggest that idea.

I own this keyboard (different exact board). It is actually quite a beautiful specimen. It is very well made. The electronics remind me of Model Ms (minus the switches). It's with how the contact sheet is used, sandwiched between the plastic and metal plates, and riveted together, and connects to the controller.

The case is totally different (at least on the top). If you look carefully, you'll notice that this board is completely flat on top. The plate is flat, and so is the case. As you know, the Model F has an arch in the top of the case, to accommodate for its curved plate. This board is incorrectly described in the Deskthority wiki as a "Frankenboard", and even listed as a Model F there! The uninformed article writer describes how the Model F pictured is a 5531 Model F, but was refitted with new key assembly. This is false. The board is totally original, it was born that way. Mine is dated Dec 26 1984.

Again, manufacturing quality is top notch. It actually looks more precisely engineered than the F or M. Looks like a much later board indeed, but it isn't. The date codes on the chips all show weeks from 1984.

Now typing feel, that's a different story. Key movement is smooth and precise, but as the original poster described, is NOT tactile. Definitely not a Model F board.

As for Model Fs being too sensitive for industrial applications... I cannot prove it one way or the other, but the 3 Model Fs I have definitely spent a long life in a very unforgiving environment of some sort. They each looked like they'd spent some time in a moat, dungeon, or dragon's keep of an old castle or something at one time. They worked perfectly though and cleaned up well.

bitslasher wrote: This board is incorrectly described in the Deskthority wiki as a "Frankenboard", and even listed as a Model F there! The uninformed article writer describes how the Model F pictured is a 5531 Model F, but was refitted with new key assembly. This is false. The board is totally original, it was born that way. Mine is dated Dec 26 1984.

I have removed this keyboard from the IBM Model F and Frankenboard pages. I'll leave you to post some correct pages on this keyboard and on Oak FTM switches. (The switch(es) can go on Other mount recognition too.)

For reference, the photo from webwit used in both instances is here, if anyone wants it for another page:

wiki/File:Ind83.jpg