Found this one for sale at my daily look at sales pages:
Centurion Superarx. I know they are Tange tubing, and as this one mostly used Sun Tour components but is that a bad thing? where they sold in GB at all?
Lovely looking bike, superb colour, I don't think I have ever seen a full ARX group before very nice, it is not a brand I am familiar with in the UK so maybe continental Europe only
They were Japanese bikes, made from 1970ish - to 1990ish, used Tange tubing and Sakae and Sugino components most of the time. As many brands it´s now a Far Eastern affair.