I've got a 58cm black Principia Rex Ellipse in mint totally unmarked condition, original Isaac forks (very minor scratch on one leg) & headset in super smooth condition.
Approx 1800g including the headset/forks
She's an absolute rocket ship, better than a lot of the mid range Cf frames for sure..
Have everything except STi's/Ergos for a fuller build.
for frame/forks/headset I'm after £355 including fully insured courier
1958 Carlton Super Python
1990's Gitane VITUS GTI Triple Butted
1996 Raleigh Titanium Special Products Division
2007 Specialized Globe Pro
2007 Specialized Globe Expert Ultegra 6700
KTM Strada 6000 Carbon Dura Ace 9000