Came across some notes where the upper right #'s in diff spots. Sorry no pics.
Series 99 - The number is to the left by about 2 spaces (notes beat up)
Series 06 Gxxxxx - 2 notes the numbers are shifted UP by about 1 space / line and aligned with top line of the portrait.
Also I have another where part of the right number has it's ink bleeding through to the reverse and is visible ( Series 2006 F95788087 J). I had pulled this for a high number note when I noticed the ink.
Spenders / keepers? Thanks
Peace