Thanks Diamonback68!!! Actually, it looks much better than the way it looks by the pictures...
The only thing that sucks is that we cannot pinpoint it's age... I really wanted to know it.
The good thing about this, is that even without serial numbers it can be registered in Mexico... but I won't be able to take it with me.
However, it makes me wonder about why the serial number was erased...
So, even if I open it... there's no serial number in the inside huh?