Portrait of Willem III (1650-1702), Prince of Orange and since 1689, King of England

Caspar Netscher painted the portrait of Willem III during the period 1670–1684, after settling in The Hague and turning his practice toward portraiture. Willem III, then Prince of Orange and from 1689 King of England, was Netscher's patron, and the artist is recorded as having received high prices for his work in the 1670s. The French-language list of Netscher's works records two portraits of Willem III in the Rijksmuseum, Amsterdam: one dated 1670–1684 on canvas measuring 49 × 39 cm, and a second dated 1680–1684 on canvas measuring 80 × 63 cm. The sources do not specify which of these corresponds to the present work, nor do they detail a commission, intermediate ownership, or acquisition history beyond the paintings' current location in the Rijksmuseum.

The portrait of William III, Prince of Orange and King of England, painted by Caspar Netscher between 1670 and 1684, is held in the collection of the Rijksmuseum in Amsterdam. The museum possesses two distinct versions of this subject attributed to the artist. The first, executed on canvas with dimensions of 49 × 39 cm, dates from the period spanning 1670 to 1684.

A second, larger canvas version measuring 80 × 63 cm was produced between 1680 and 1684. Both works remain part of the Rijksmuseum's holdings, documenting the artist's patronage by the Stadtholder during his career in The Hague.

Caspar Netscher is recognized as a master of the Dutch Golden Age who introduced an international style to the Northern Netherlands, particularly through his exquisite rendering of textiles like oriental rugs, silk, and brocade. His artistic development was fundamentally shaped by his training under Gerard ter Borch in Deventer, whose influence is evident in Netscher's delicate pencilling and choice of subjects featuring female figures in glossy satins. While his early career involved producing small cabinet pictures, he achieved significant fame and wealth after settling in The Hague and focusing on portraiture within the elegant court style favored by the French-oriented elite.

The artist's reputation was solidified by high-profile patronage, most notably from William III, Prince of Orange and King of England, whom he portrayed multiple times between 1670 and 1684. This royal endorsement, alongside purchases by figures such as Cosimo III de' Medici, underscored Netscher's status during his lifetime. Although critics have noted that the refinement in his work occasionally borders on weakness, his technical skill in depicting light, shade, and complex fabrics ensured his paintings were highly valued then and remain so for their finish. His stylistic legacy was continued by his sons, Constantijn and Theodorus, who worked in their father's manner.

This painting depicts Willem III (1650-1702), a significant European figure who served as Prince of Orange and later became King of England in 1689. The portrait was completed before his ascension to the English throne, presenting him in a formal, authoritative manner. The identity of the artist who created this work remains unrecorded, as the painting is unsigned, a common occurrence for commissions of this period.