the highest values showing the Queen flanked by palm trees. These stamps continued as the standard for many years, with some values getting color changes; for instance, the 5c was originally rose, then changed to green in 1922, then to lilac in 1926. The first commemorative stamps, in 1923, celebrated Wilhelmina's 25th anniversary, depicting her with a finely-engraved portrait. The portrait was reused in the definitive series of 1928, which added a steamship to the bottom of the design. In 1934, a series of 17 types marked the 300th anniversary of the colony; designs included portraits of figures significant in history, plus a view of Van Walbeecks' ship. 1936 saw a new definitive series, with the usual lower values as numerals, now vertical in an oval frame, while from 10c on up was a profile of Wilhelmina wearing a sort of shawl or veil drawn back; a depiction of the Queen not seen any other stamps of the Dutch area. The 40th anniversary issue in 1938 and the definitives of 1941/1942/1947 reverted to the use of the same profiles of Wilhelmina as the Netherlands and the Netherlands Indies. A set of 15 airmail stamps in October 1942 were bi-colored designs showing airplanes, maps, and scenery in various combinations; they were soon followed by set of six regular issues in 1943 that were also bi-colored, each with a scenic view of a different island. A last set of airmail stamps appeared in 1947, the lower values a stylized plane and posthorn design, and the higher showing a DC-4 skimming the waves. A 1948 set of 11, showing white-haired Wilhelmina in profile, quickly became dated as Queen Juliana was invested with the crown in September; she appeared on a pair of stamps commemorating the occasion in September. Netherlands Antilles (1950-2010) The name of the colony officially changed in 1949, and was first inscribed in two stamps issued in October for the 74th anniversary of the UPU. The name change also entailed new definitives, which began appearing in 1950, using the same design as issued for the Netherlands the previous year, but inscribed "NED. ANTILLEN". A handful of commemoratives appeared during the 1950s, and then 1958 new definitives adopted a simple and artistic designs representing the different islands. The designs continued in use for many years, with new sets of (higher) values supplementing the originals in 1973 and 1977. The numbers of stamps