The Red Penny Stamp is a famous postage stamp from the United Kingdom, issued in 1840. It was the world's first adhesive postage stamp, designed to simplify the mailing process by allowing senders to prepay for postage. The stamp features a profile of Queen Victoria and was printed in a distinctive red color. The Red Penny Stamp is highly collectible and holds significant historical value. It was part of the Penny Black series, which also included the Penny Black Stamp, the first-ever postage stamp. Collectors often seek out rare variations and misprints, making it a popular item in philately.