Who created "Young Man in a Velvet Cap (Petrus Sylvius?)"?

Young Man in a Velvet Cap (Petrus Sylvius?) was created by Rembrandt van Rijn in 1637.

What medium is "Young Man in a Velvet Cap (Petrus Sylvius?)"?

Young Man in a Velvet Cap (Petrus Sylvius?) is etching on laid paper.

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Rembrandt van Rijn, 1637