Based on the age, I would guess Fukkas, but possibly complicated whites. You'd have to open it up to check for sure. Even some of the Fukkas have the Alps logo on them, after all.
That Zero is the only Filco I've any interest in. If the switches are even half as nice as what I found in the Matias, it would be a nice addition to my collection.
Edit: Oh, bugger, I totally didn't pay enough attention to the first picture. If it's made by Alps/Alpine Electronics, it's almost definitely complicated whites.