Dutch School 16th Century

Unframed. Laid down. The design is made from several sheets of paper. There is some rubbing at the edges of each sheet, and in some areas the ink is somewhat faded. There are some losses, one at the lower part of the left edge, some losses at the lower left corner, and a small hole near the lower right corner: all made up. Overall, however, the coloured washes are still quite bold.
"In response to your inquiry, we are pleased to provide you with a general report of the condition of the property described above. Since we are not professional conservators or restorers, we urge you to consult with a restorer or conservator of your choice who will be better able to provide a detailed, professional report. Prospective buyers should inspect each lot to satisfy themselves as to condition and must understand that any statement made by Sotheby's is merely a subjective, qualified opinion. Prospective buyers should also refer to any Important Notices regarding this sale, which are printed in the Sale Catalogue.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING A LOT, ALL LOTS ARE OFFERED AND SOLD AS IS" IN ACCORDANCE WITH THE CONDITIONS OF BUSINESS PRINTED IN THE SALE CATALOGUE."

Although the window depicted here is dated 1479, the drawing is clearly of 16th-century origin.  It is possible it was made as a record of an earlier window, perhaps in connection with a restoration project, or else as a design for a window commemorating some event that took place in 1479.  Although she cannot associate the drawing with the style of any artist known to her, Dr. Zsuzsanna van Ruyven-Zeman has confirmed that she believes it is a 16th-century Dutch work, from the same artistic milieu as Lambert van Noort.