$5 Phillips Randall - Missing Colour Phase - Genuine?

Question: Is this a genuine missing colour phase banknote, or has it been washed / bleached / left in the sun?

The width is identical to a normal note, but the height is slightly smaller. The width of the purple main part of the banknote is slightly smaller. I have seen shrunken banknotes with a similar look that must have been through some sort of treatment, but this one is pretty much the correct size.

Banknote in question:

Front


Back


Normal Phillips Randall banknote underneath


As above, normal note underneath


(I resized my images before noticing it's no longer required. Thank you to the admins for enabling full size images)

Thank you