Not actually the Yellow compound, as I now know, but painted yellow as supplied for use in Ferrari 355. Apparently they fit the rears on a 964 RS, according to Charles Sturrock. See the thread for more details:
http://www.porscheclubgbforum.com/tm.asp?m=721565&mpage=1&key=ò°Š
SOLD.
http://www.porscheclubgbforum.com/tm.asp?m=721565&mpage=1&key=ò°Š
SOLD.