Spain introduced an express service for the interior of her territory on July 1, 1905. Special express stamps (Correspondencia Urgente) were issued which were only valid for the additional express fee. All capitals of the provinces and fifteen important non-capital cities offered an express service in 1905. In 1928, there were some 250 more cities in Spain with an express service. This special design was in use until 1929, when new, recess printed express stamps were issued.

Top stamp: First typographed issue. Lower stamp: The offset printed issue of 1925


Like all Spanish stamps issued from 1901 to 1932, these particular issue shows control numbers on the reverse from A.000.001 to A.123,000 (assumed). Attempts were made to relate the control numbers to different colour shades and printing processes - so far without final results.