I finally got a peek behind the counter at "ye olde curmudgeons bike shop" There they are, two very dusty NOS saddles, a Brooks B15 swallow with small steel rivets and a Middlemore swallow just like the one on the CR webpages. (http://www.classicrendezvous.com/British/Middlemore.htm)
I bought them both. Can one date these puppies? I think I need a classic 531 frame now to mount one of them. I feel myself getting sucked down into the vortex again. Mr Curmudgeon better not let me back behind the counter again or my kids education will be toast.
Warren Young
Toronto