There is the Throne in the Hall of Knights used every year for Prinsjesdag (the remnant of what once was the yearly opening of Parliament). The monarch than delivers what in Dutch is called Troonrede (literal translation: speech from the Throne).
This throne and the additional chairs were only designed in the early 20th century when they moved the ceremony from what was than the Second Chamber at the Binnenhof complex and now is styled as the old hall. It was originally the Ballroom of the new wing build for Stadholder Willem V. The stools and benches for this ballroom were taken by Louis Napoleon to his new palace in Amsterdam. These same stools were used for the small princesses during the photoshoots of 1948 and in 2013.

Queen Juliana and prince Bernhard sat in 1948 on the thrones used by Queen Wilhelmina and Queen Emma for prinsjesdag in the old hall.

Queen Wilhelmina used for her inauguration the same throne as her father Willem III. A new throne for Queen Emma was made for that event in 1898.

King Willem III was given a throne for his investiture by his mother the Dowager Queen Anna Pavlovna (surprisingly Anna Pavlovna is not styled the queen mother but queen dowager most often). She used a normal chair of her late husband Willem II and there were gilded additions to it and new upholstery. The end-result was one of the most horrid pieces of furniture ever created. Still Willem III kept his throne and it stood in the Throne room of the Royal Palace of Amsterdam throughout his reign and (most of) that of his daughter. Queen Juliana dismantled the dais and hangings so the large fireplace and the painting by Ferdinand Bol can be seen again.

Willem II used two wooden neogothic chairs for himself and his queen in 1840. They were part of a set of 6 or 8 chairs and inspired by the gothic throne of England.

Btw Queen Maxima is the first queen-consort to be seated next to her husband.

For the investiture as sovereign prince of Willem I in 1814 and as king of Willem II in 1840 and Willem III in 1849 the female members of the family were seated to the side (where Beatrix and her granddaughters sat). The adult male princes of the house sat on either side of the king on chairs.
Willem I had his sons the Prince of Orange (Willem II) and prince Frederik on either side.
Willem II had his sons the Prince of Orange, prince Alexander, prince Hendrik and his brother prince Frederik with him.
Willem III had his brother prince Hendrik and his uncle prince Frederik. The sons of Willem III, Wiwill and Maurits were still children and sat with their mother and the other women of the family.