Watch List notes:

Testbanknoten: Great Britain: Test Note produced by De La Rue Currency dated around 2011 with portrait of Albert Einstein. It is a special type because it has one additional security feature (OVI ink by Sicpa) on back side which was not any more used on the later presented note. The note has the ficitve denomination "50" and is horizontally designed on front, vertically designed on back. It is intaglio printed on real banknote paper with several security features. Furthermore the note has a windowed security thread with imprint "E=MC2" and a watermark (portrait of Einstein) at right. Condition: UNC.