Renaissance, El Greco,
The image appears to be a painting, possibly from the Renaissance period, given the style and composition. The subject is an elderly man with a white beard, holding a cross and a book. He is dressed in a simple robe, and the background is dark, emphasizing the subject. The artistic style is realistic with a touch of surrealism, especially with the inclusion of a floating plant and the detailed depiction of the man's face. The color tone is muted, with a mix of dark and earthy tones.