Has anyone seen this writing on the exterior of the shoe, and do you know what it indicates?

Hi there, I have a pair of Nike Dunk low's, Brazil style, I've been told they're Deadstock?, (as you can tell I don't know much about collecting Nike's) which I'm guessing means they're no longer being produced.  I inherited these from a friend of mine, and mentioned they might be worth something extra due to the writing on the sides.  They have never been worn, and are straight off the factory line and made it into my hands.  Just looking for any help, I've attached some photos but for clarification the writing says 

PROD   CAY or CFM (not sure, see photos)

then theyre signed by what looks like (cursive) Brenda Lin

and the date 4-18-01

The ink seems to be written into the ink or there since production, since it isn't removable.  A friend or two seemed to think it might have been a prototype of some sort, but I know this model had already been made for a while, so that doesn't make sense to me. 

I called Nike and they couldn't tell over the phone and recommended the forums for help.  If anyone has any info, I'd be very appreciative!  Thanks all :]

Anyone? 

no idea what it says but i'd say it's not worth more because of the writing. in fact, i'm guessing that it's worth less because of that flaw.

PROD could be Paul Rodriguez the pro skater.

Might be an autograph.