Need help identifying

I found this old ps2 keyboard in my parents' shed and am trying to get it working with my PC. From what I've gathered, some of the ps2 keyboards aren't pc compatible. Since the sticker that would identify it is long gone I'm hoping someone may recognize it. I scoured all the vintage ps2 keyboard listing I could find and none of them matched! And all my troubleshooting to get it to work with my pc hasn't panned out. Any help is much appreciated. Last pic is before I cleaned it up :)