Minor orange issues

[Grannygrinder]

Evenin',i've just become the proud(?)owner of an old orange prestige,it has either 45 or 15 stamped into the bottom bracket.Anyway the internal diametre of the headtube is 1.17ish inches or 29.8ish mm,i assume this makes it a 1"steerer. I've not dealt with 1inch stuff before,is it all threaded or are there 1"ahead type headsets and threadless 1"forks.All help gratefully received.

 

[Tallpaul]

Yup 1". Threaded is defo more common for headsets and forks in that size, also period correct for the frame

Any pics of the frame?

 

[Grannygrinder]

Be patient...

It's currently got some shall we say perforation issues in the seat tube but I will try and sort something out.Anybody got a 1"headset kicking about then?

 

[gump]

Is it black? and very tidy otherwise?