The strange thing about the Juliana definitives in the Netherlands Antilles is, that the old design of the 1950 En Face definitives was used once again in 1979, even though they had been replaced in the 1950s by the Disberg definitives I showed you yesterday. The stamps were only released in booklets.
I quite like the bright colours of them (they do look better in real life, though).
The stamps were isued in February so maybe they were issued in honour of Juliana's 70th birthday (which was in April) or maybe they were issued in honour of her forthcoming abdication but I don't think that had been announced yet at that time. Hmm.