I like the red sockets, they're very stylish...
We can piece together a bit more of the story here, because that 128k board is the version that was used before the release of the 512k (that version has an extra part number on the silk screen and a couple of tick boxes to mark whether it's a 128k or 512k board). But the chips have a 1985 date code on them. So it seems likely that the original owner had the true Apple Upgrade Experience, bought this really just before the 512k came out (let's face it, the 128k wasn't around that long on its own before the 512k came out), then ended up bodging it themselves or getting someone else, probably local to do it.