These 2006s can be so frustrating to attribute, but I'm fairly certain it's WDDO-024... Either that or 007... or 042... or 053... or 056. But no, pretty sure it's 024. I think...

Edit: when you forget that you've literally gone through this same question with what you thought was the exact same die eleven months ago...
http://goccf.com/t/376143
