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.
I admit I don't get bothered by it really, but I can certainly understand the preference, and it adds visual interest. The placement is kind of interesting, as Cherry MX switches (and some Alps) are made accommodate an LED threaded through the switch housing. This was specifically for on-key indicator lamps, but it evolved over time to our current situation with per-key LED lighting.