During the 70's and 80's a distributor named Service Cycle Supply of Commack, Long Island imported Araya bicycles. I believe that they were the sole importer for Araya for the country. They were very well manufactured bikes and I remember my Dad selling them at his bike shop in the late 1960's. I agree with others that the '631' tubing sticker was a blatant attempt to mooch off of the very prevalent British Reynolds 531 tubing that was being heavily used by almost all European manufacturers .