William and Mary carved oak surmounts late 17th century

three with foliate and egg carved decoration, losses, together with eleven sections of carved oak egg and foliate cornice and three other sections of moulding, some pierced, losses (18)

One of the sections with foliate and egg carved decoration is lacking it's upper mouldings.
"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."

The design of these surmounts is very similar to the carved stonework decoration to be found on the Great Staircase, Chatsworth for which Samuel Watson's invoices survive as does a drawing of similar moulding, illustrated below (Devonshire Archives).

These surmounts and lengths of similar moulding were presumably removed from the Mary Queen of Scots and Leicester apartments by the 6th Duke. In the Handbook, p. 20, whilst commenting on the South Corridor, he notes that the frames of three large landscapes, which were formerly on the staircase at Londesborough, were reframed by him. The frames of all have been made from mouldings of those (apartments) and other altered rooms.