The Penny Blue, a one-penny postage stamp released in 1840 has been frequently mistaken as one of the many postage stamps issued by Britain. The wrong impressions often stem from the fact that the stamp carries an image of a regal lady with a crown. The stamp is actually a part of a collection of proof impressions designed and released when Roland Hill was looking for new inspirations for colors that can be used on stamps, as the replacement for the Twopence Blue and the Penny Black.
