Can anyone supply me with a code for a GM VDO radio please?

Not sure which number is the serial:

On the sticker is GM VDO 330886636
Type CDR500E
2F4
Made in germany

2 bar codes the top one being:
9022 214 03759 03

the bottom one
003 0313 1812928

one the sticker edge WA030313

and etched into the side panel
GM050031812928

Really not sure which one is the serial?

Thanks guys