Yes i already got the polished slate with blue rubber...i actually have 2I'll keep an eye out. I agree with Carrera that they've suddenly become rare. I've had 4 people PM me in the last month asking if I have a pair for sale. I don't. Expect rarity to lead to price rises!
I do have a polished slate (blue rubber) but I see you already have that one ;-)
Great collection!
I really appreciate your help for keeping an eye out on the WBC. I hope to complete them before the year ends