Possible to get Serial from UUID?

My late 2009 white Unibody MacBook doesn´t show it´s serial #. In Profiler there is only ´not available´. The lower case was replaced because the rubber was peeling off, so the number there isn´t the correct, original one. There is no serial on the RAM socket also, the sticker there is just pure blank.

Is it possible to read the serial somewhere else, maybe from the UUID?

is the blank, black sticker on the RAM socket a sure indication of a mainboard swap? Its a pity that there is no other location of a serial # anywhere on the board, its´s quite easy to dissemble for a lookup..I already looked under the battery.

I also tried ´´nvram -p´´ but nothing..