Alexander or Jan Vinck 

This portrait, likely of Alexander or Jan Vinck, was painted by the renowned Flemish artist Anthony van Dyck, who was active during the 17th century. Van Dyck is known for his elegant and refined style, which is evident in this work. The subject is depicted in a formal pose, wearing a stylish ruff and a black doublet, the careful details and naturalism in his depiction highlighting the virtuosity of the artist. This portrait exemplifies Van Dyck's mastery in capturing the likeness and social status of his sitters. While we lack information about the sitter's exact identity or the painting's date, the work's quality and style clearly place it among the most notable works of van Dyck.