That's not a problem; there are several keyboard interfaces for the A1200. The real problem is that you're going to end up with a keyboard that has Windows keys. On the other hand, it's a good opportunity to get a nice mechanical keyboard with Cherry MX switches to replace those crappy A1200 keyboards.
Is there no interfaces that allow use of Amiga 500 keyboards? Re-using the original Amiga 1200 keyboard was really what I meant not a PS/2 or DIN converter to use PC keyboards. I am thinking of towering up my super expanded A600 and using it as a graphics workstation with Dpaint 3 and some Blitz/Amos coding but the keyboard is not convenient and I have a spare A500 keyboard

I would never tower or re-house any of my machines if I had to have Mac or Windows keys on them. I'd rather use an Atari keyboard lol