If anyone is interested, I've a lead on a straight Hetchin's Vade Mecum in the UK, size I believe is 22&1/2" CC. I don't have a price or much more information, but I've seen pics and she looks freshly re-enameled. It was offered to me, but I strictly usually only want the Vibrant or Curly rear stays.
If interested I'll pass you along to the owner.
Peter Naiman
Milwaukee, WI