Question: The Dutch guilder is the currency of the country that has what type of governmental system?

Context paragraphs:
2½ cents (World War II Dutch coin): The 2½ cent coin minted in the Netherlands during World War II was made of zinc, and worth 1/40, or .025, of the Dutch guilder.  It was designed by Nico de Haas, a Dutch national-socialist, and struck in 1941 and 1942.

One guilder coin (1982–2001): The Dutch 1 guilder coin featuring Queen Beatrix on its obverse was a unit of currency of the Dutch guilder minted between 1982 and 2001.

25 cents (World War II Dutch coin): The 25 cent piece was the highest-denomination coin minted in the Netherlands during World War II.  Struck between 1941 and 1943, the 25 cent coin was worth 1/4, or 0.25, of a Dutch guilder.  It was made entirely of zinc, and designed by Nico de Haas, a Dutch national-socialist.  The respective mintage was of 34,600,000 (1941), (1942), 13,600,000 (1943).

Netherlands Antillean guilder: The Netherlands Antillean guilder (Dutch: "gulden" ) is the currency of Curaçao and Sint Maarten, which until 2010 formed the Netherlands Antilles along with Bonaire, Saba, and Sint Eustatius.  It is subdivided into 100 "cents" (Dutch plural form: "centen").  The guilder was replaced by the US dollar on 1 January 2011 on Bonaire, Saba and Sint Eustatius.  On Curaçao and Sint Maarten, the Netherlands Antillean guilder is planned to be replaced by the newly created Caribbean guilder.

Guyanese dollar: The Guyanese dollar (currency sign: $, G$ and GY$; ISO: GYD) has been the unit of account in Guyana (formerly British Guiana) since 29 January 1839.  Originally it was intended as a transitional unit to facilitate the changeover from the Dutch guilder system of currency to the British pound sterling system.  The Spanish dollar was already prevalent throughout the West Indies in general, and from 1839, the Spanish dollar unit operated in British Guiana in conjunction with British sterling coins at a standard conversion rate of one dollar for every four shillings and twopence.  In 1951 the British sterling coinage was replaced with a new decimal coinage which was simultaneously introduced through all the British territories in the Eastern Caribbean.  When sterling began to depreciate in the early 1970s, a switch to a US dollar peg became increasingly attractive as an anti-inflationary measure and the Eastern Caribbean Currency Authority (of which Guyana was a member) made the switch in October 1975.  The Guyanese dollar is normally abbreviated with the dollar sign $, or alternatively G$ to distinguish it from other dollar-denominated currencies.

Half-cent coin (Netherlands): The half-cent coin was a Dutch coin used from 1818 to 1940.  It was the smallest-denomination coin of the decimal Dutch guilder until its withdrawal from circulation after the German occupation of the Netherlands in 1940.  It was nicknamed "Halfje", similar to the Kwartje (the suffix "-je" is a diminutive in the Dutch language, similar to the English "-ie").

Dutch guilder: The Dutch guilder (Dutch: "gulden" , ] ) or fl.  was the currency of the Netherlands from the 17th century until 2002, when it was replaced by the euro.  Between 1999 and 2002, the guilder was officially a "national subunit" of the euro.  However, physical payments could only be made in guilder, as no euro coins or banknotes were available.  The Netherlands Antillean guilder is still in use in Curaçao and Sint Maarten (two countries in the Kingdom of the Netherlands), but this currency is distinct from the Dutch guilder.  In 2004, the Surinamese guilder was replaced by the Surinamese dollar.

Twenty-five cent coin (Netherlands): The twenty-five cent was a coin worth a quarter of decimal Dutch guilder.  It was used from the decimalisation of the currency in 1817 until the Netherlands adopted the euro as sole currency in 2002.  The last minting was in 2002.  The coin was the third-smallest denomination of the guilder when the currency was withdrawn, and the largest of a value less than one guilder.

Kingdom of the Netherlands: The Kingdom of the Netherlands (Dutch: "Het Koninkrijk der Nederlanden" ; ] ; Papiamento: "Reino Hulandes" ), commonly known as the Netherlands, is a sovereign state and constitutional monarchy with the large majority of its territory in western Europe and several small islands in the Caribbean Sea, in the West Indies islands (Leeward Islands / Lesser Antilles).

Bruno Ninaber van Eyben: Bruno Ninaber van Eyben (born 3 November 1950) is a Dutch jewellery and industrial designer.  He designed the last series of Dutch guilder coins and the obverse side of all circulating Dutch euro coins.

Supporting paragraphs: Dutch guilder Kingdom of the Netherlands
Answer: constitutional monarchy