It's a 27.2mm Kalloy Uno, August '9 and mine since new. Shows some signs of having been in the shed for, um, a long time and some slight scratching, but all below the minimum line and nothing that's gone through the anodising.
All the little micro-adjust spines look like new, I don't think I used it very much :?
Sat on my windowsill in the sun
I guess £15 posted is as good a figure as any
Off to a beer garden, so no decisions made (by me) after six will be binding!