This picture is unlined and the existing canvas is providing a stable structural support. The paint surface appears clean and there are no signs of craquelure.
UNDER ULTRAVIOLET LIGHT
There are retouchings along the top and sides edges of the picture where the extremities have been rubbed by the rebate of the frame. There is an area of retouching to the left of the main tower and a few smaller retouchings in the clouds.
The picture is contained in a moulded plaster 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."