Most of their Ukuleles were more promotional to go along with the popular acts of the time including the Rolling Stones, Tommy Steele(!), Sooty(?) and famously the Beatles, (you see a lot of their various Beatles Guitars including the one that uses the Mickey Mouse shaped body).Anyway they had one stab at making a proper plastic Ukulele, not promoting anything, just to have a "real" plastic Ukulele this side of the Atlantic and it was called, for some reason, "the Columbian"?
My Columbian is in fairly good condition with an off white/cream front and a marbled brown faux wood back and sides, though there is a little "bellying" of the sound board now and the action is a little high. Despite this it keeps tune very well and has a good tone, perhaps a little short on sustain, but at least as good as any US made plastic Ukulele I have played. And this goes for the build quality too.