Just won this one:

AMD ENG SAMPLE
1SP2400GK0603
FCBDF 0534VPAW
FA34774150046

Hehe, shame I don't have a mobo for it

However, I DO soon have a mobo for this 4000+:

KAB1E 0626FPMW
1489588F60017

Same batch as the WR chip, but lower batch #.

0626FPMW mania lol