Were Singapore made HP-32Sii produced with different keycaps?

[rprosperi]

I agree with comments above, what you are seeing in these keys is a result of "double-shot" injection used during USA and early Singapore manufacturing, abandoned in later production lots, including probably all production from Indonesia.

I don't have 32SII as old as that one, but looking at other Pioneers from older to later than the dates you mention confirm the older double-shot units often have flatter and even somewhat uneven faces, as compared to the much smoother and rounder faces of the later keys with painted-on labels.