Simon de Vos

Bears unidentified collector's mark (L.380b);
sale, Amsterdam, Sotheby's, 10 November 1998, lot 17 (as Circle of Johann Liss)

Window mounted. Some foxing. Signs of vertical fold near centre. Very small hole, lower right. One or two very minor thin spots at left and right edges. Otherwise good condition. Sold in a modern dark wood frame.
"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."

Drawings by Simon de Vos are extremely rare.  A preparatory study for a painting by the artist did, however, recently appear on the market¹, and although that drawing was generally more finished than this, many details, particularly in the less elaborately drawn background figures, are strikingly similar in execution to the present sheet, indicating that the latter drawing too can be convincingly attributed to de Vos.  

1.  Sold, New York, Christie's, 31 January 2013, lot 115