On the back of this note, in the frame where the Glasgow branch office is, turn the note upside down and look with a magnifying glass in the "grass" in the field. With a good eye, you will notice "W H Egan" in the field - this was an oft noticed aspect of the notes, but the engraver denied this until the 1990's when he finally fessed up and admitted that he had indeed engraved his name in the field.