Hey, I realise this thread is probably long dead.... but I myself just picked up what looks to be (using colour alone) an early to mid 80s "MBK Trainer" from a verge in my suburb, just before a bulk rubbish collection by our city council. I mainly just grabbed it cos it was my size-ish & and semi-horizontal dropouts for a single speed conversion. I first first noticed some of the finer build details as I was stripping it; the funky recessed brake line conduit in the underside of the top tube, and the low-key seat tube clamp <i>within</i> the apex of the seat stays & seat tube.. and then I noticed the "made in france" sticker.

Been googling a little bit since, but apart from finding out they're rebadged motobecane - yet to turn up much more.

Am I gonna have grief with the b/bracket thread? It was all pretty period, vanilla shimano exage I've stripped off it. Yet to crack the ol' adjustable cups