Odd headset sizing

mekonta
mekonta Posts: 58
edited April 2008 in Workshop
I've got a Principia which for some reason they decided to build with a 1 1/8" top race and 1 1/4" bottom race. And sadly it now needs replacing and I'm not sure if a replacement will be easily found.

I've seen this set-up on newer concealed aheadsets, but not the older type.

Anyone got any suggestions?

Cheers