Well it's seems I have Mairag with 3 stars,manufacturad in 1978 from Reynolds 531 butted tubes(just triangle),fork is Nervor.And indeed my caliper lie to me.Seat post is 26.2(french metric 531).I don't get what equipment bike had but I have a plan.Sunshine high flank hubs,Suntour VX(rear,front and shifter levers),Sakae Silstar crankset,Sakae stem and Sakae Road Champion drop bar,and yes,Weinmann Carerra first gen brake set.Except hubs,stem,dropbars and brakes which are refurbished,everything else are NOS.Decals will be replicated.As matter a fact I just work on it...