RU means rmc for us market without red tab.
RK means rmc for worldwide market (not necessary with red tab, but the majority has it)
but i dont know for what is standing RW...

Nice one buddy, thanks for finding that out, so RU is USA and no Red Tag, RK for rest of the world market probably with Tag. Maybe RW is for Aisa only?

that's probably it. but at least we know more facts bout authentic RMCs!

We RMC maniacs need to know everything!

RW is only on unlimitedsifr lot1002. not on other asian jeans

why only on unlimitedsifr ??????? wait... maybe it's because it's the only one with the washed and lil rips???? that makes alil sense.. washed!

You may be on to something there Shin, however I checked the washed/ripped denim RMC's which Coogles have on their web site, and although its really hard to tell, the laser number on the patch in the pic doesn't look like RW, but I could be wrong. Check it out and see if you can see it better, because you may be right about this!

hmmmmmm.... the serial number on Coogles is RK614233......... so... my assumption is not correct... but i still think RW stands on wash.

Failing any other explanation, I'm happy to conclude the same.

what u think is completely wrong!
u have to read more exactly what i´m writing.

i said unlimitedsifr lot1002 has RW, not lot1001.
lot1001 is the black washed denim and it has RK like ordinary RMCs.
lot1002 is dark indigo non wash like all other rmcs but it has RW.

RW doesnt stand for wash!