This is a classic Spanish fiscal (revenue) stamp from the long-running “Especial Móvil” series, used for the payment of taxes on documents, receipts, contracts, and various legal transactions. Printed in a warm reddish-brown shade, the stamp prominently displays the Royal Coat of Arms of Spain, featuring the kingdoms of Castile, León, Aragon, Navarre, and Granada beneath a large royal crown. Surrounding the arms is a bold oval frame with ESPECIAL–MOVIL at the top and CENTIMOS below. The series is known for its intricate engraving and long period of use from the late 1800s well into the early 20th century. Your example bears a clear fiscal cancellation, typical for these documentary issues. A solid and attractive addition to any collection focused on Spanish revenues or classic fiscal philately.