Who created "Portret van Karel I, koning van Engeland in ovaal"?

Portret van Karel I, koning van Engeland in ovaal was created by Willem Jacobsz Delff in 1628.

What medium is "Portret van Karel I, koning van Engeland in ovaal"?

Portret van Karel I, koning van Engeland in ovaal is engraving.

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Willem Jacobsz Delff, 1628