Well i bought it, turns out to be rubber dome, but you cant win em all. Doing research right now to try and find more information on the keyboard/pcb/chips etc. Looks like i will likely have to do some work in the future with its signals to get it to work with modern computers. Two chips it has is an NEC chip which i cannot find information on for the life of me, and an Intel chip (P80C51BH) which has information pretty readily available. Photos shown are of the keyboard in question and the pcb front and back.