Keyboard from 2010 built by TG3 for a Siemens chemistry analyzer. I cleaned it up, added some weight to the bottom, and converted to USB. Cherry MX Black and PBT Dye-subbed DCS caps. Take a peek at what should be F9 and F10 (and are after conversion), as well as some of the keys above the numpad, which, tangentially, now has 5 keys that do absolutely nothing related to what's written on them.
Looking at the keyboard before reading the text I thought "Oh, a keybord from a chemical or biological lab equipment".
And there are a lot more keys not doing anything related to the text on them, I'd say.
Fun project: Just make them send the key's lettering as a string of letters.
Oh yes. Converting this one was interesting. HERE is what it actually does. the "na" keys still send the original combo codes because the particular conversion firmware I use ran out of room.