On 17 November 1947 the Oberpostdirektion Saar was transformed into the "Post-, Telegraphen- und Telephonverwaltung des Saarlandes" (abbreviated like the French correspondent entity as P.T.T. Saarland; Post, Telegraph and Telephone Administration of the Saarland), keeping the headquarters in Saarbrücken. Postal vehicles and postboxes were green (RAL 6001), like in France. The French established the Saar Protectorate in December 1947, and on 1 April 1948 the P.T.T. Saarland issued a new series inscribed "SAARPOST", followed by another in 1949 inscribed "SAAR". The P.T.T. Saarland issued a few commemoratives each year through 1956, punctuated by a definitive set showing various buildings, in 1952.