- Issue Date : December 10, 1928
- Designed by : Jan Sluyters
- Printed by : Joh Enschedé Haarlem
- Print Process : Photogravure
- Perforation : 12 or 12½
- Valid for postage: until December 31, 1935
The annual child welfare Netherlands stamps shown here were issued on December 10, 1928. These stamps, benefiting children's charities, followed the theme of "science".
The 1½ c. + 1½ c. denomination features Jan Pieter Minckelers (1748-1824), a physicist and the inventor of illuminated gas, used for hot air balloons.
The 5 c. + 3 c. denomination features Hermann Boerhaave (1668-1738), a Dutch botanist and physician that attained European fame.
The 7½ c. + 2½ c. denomination features Hendrik Lorentz (1853-1928), a Dutch physicist and the winner of the 1902 Nobel Prize in Physics.
Christiaan Huygens (1629-1695), a Dutch mathematician, astronomer, and scientist. His works included the early studies of the rings of Saturn, the discovery of Saturn's moon Titan, and the invention of the pendulum clock.