Although the Netherlands Antilles functioned well as a political and economical unit, at least according to the government in The Netherlands proper, many Arubans were unhappy with the arrangement. Their main concern was that they perceived the Netherlands Antilles as being dominated by Curaçao, with Aruba playing second fiddle or worse, and having almost no say in their own affairs.
Therefore, at a 1972 conference in Suriname, Aruban politician Betico Croes proposed the creation of a Dutch Commonwealth of four states: Aruba, The Netherlands, Suriname, and the Netherlands Antilles, each to have its own nationality. In March 1977, a referendum was held in Aruba with the support of the United Nations where 82% of the participants voted for complete independence from The Netherlands.
After extensive wrangling with the Dutch government, Aruba reached an official agreement within the Kingdom for its independence in 1983, to be developed in a series of steps as the Crown granted increasing autonomy. In August 1985, Aruba drafted a constitution that was unanimously approved. Then, on 1 January 1986, Aruba seceded from the Netherlands Antilles, officially becoming a constituent country of the Kingdom of The Netherlands.
As a result, it was necessary for the remaining five islands in the Netherlands Antilles to review their currency system. Subsequently, the Royal Dutch Mint designed an entire new series of coins inspired by the square Stuiver of 1913. Shown below is my set from 1989.

