24 Oct 2017, 17:28
Thanks for the URL formatting tip. I used a special spray lube for plastic parts (bought it on Amazon, I think), worked like a charm on those Mitsumis.
A quick glance has revealed that my "mystery" board indeed has Proworld MX clones, it seems to have seen plenty of use. The switches feel rather nice but there is an issue with unwanted key repeats. The keycap distribution is very strange, an apparently unsystematic mix of terribly thin cheap yellowed caps and rather nice doubleshots, which have hardly yellowed at all. The legends with the German Umlauts are so wonky, they look almost hand-painted (at least the dots above the letters).
I'll take it apart one of these days and post pictures.