This Monogrammist has been identified as Jan van Amstel, see Elise L. Smith, "Brunswick Monogrammist" Grove Art Online, Oxford University Press, 12/4/07 [1]Archived 2008-08-21 at the Wayback Machine; and Collection: Dr. Herbert & Monika Schaefer: Selected Works, New Haven: Mountain View Press (1998), 32.
This Monogrammist has been identified as Jan van Amstel, see Elise L. Smith, "Brunswick Monogrammist" Grove Art Online, Oxford University Press, 12/4/07 [1]Archived 2008-08-21 at the Wayback Machine; and Collection: Dr. Herbert & Monika Schaefer: Selected Works, New Haven: Mountain View Press (1998), 32.