Bought this earlier today, seller accepted an offer. Just saw this thread.

Got another white Alps Magitronic a couple of weeks ago, turned out that two of the PCB/plate locator pegs inside the case were broken off and rattling around. Since they were on one end, the key-plate will shift a bit inside the case when typing, very distracting. So I bought this unit figuring to make one decent board out of two donors. Plus, that multi-directional arrow array (plust Turbo!) was just too cool to pass up.
Might try making another case for the other unit, having the keys all plate-mounted makes for a simple arrangement inside, looks feasible to mod something that will hold it stable. Not to mention a newer look, that 80's style horizontal lines theme looks pretty dated, and not in a good way.