glass executed by James Couper & Sons, Glasgow

Liberty Pewter Sketch Book, Westminster City Archives, n.d., p. 283, no. 0276
Liberty’s 1875-1975, An Exhibition to Mark the Firm’s Centenary, exh. cat., Victoria & Albert Museum, London, 1975, p. 89, no. D250A
Mervyn Levy, Liberty Style, The Classic Years, 1898-1910, London, 1986, pp. 30-31
Adrian J. Tilbrook, The Designs of Archibald Knox for Liberty & Co, London, 2000, p. 114, fig. no. 96
Victor Arwas, Art Nouveau, From Mackintosh to Liberty, the Birth of a Style, London, 2000, p. 124
Stephen A. Martin, Archibald Knox, London, 2001, pp. 15 and 205

Overall in very good condition. This coupe maintains its original glass liner, which is rare, and displays a vibrant and dynamic swirling pattern. The internal gold hued flecks wonderfully compliment the pewter base. The pewter surface with two contrasting textural treatments, the support legs are smooth and the body of the coupe with texture. The surface of the pewter with very light surface scratches and a few scatter abrasions scattered throughout, consistent with age and gentle handling. There is minor evidence of oxidation and some surface dirt concentrated to the recessed areas of the design. The glass liner appears original and in very good condition, with a few faint surface scratches. The glass element with minor airbubbles and particular inclusions inherent in the material, which are not visible when inserted properly into the pewter frame. The insert with tiny vertical surface abrasions to the perimeter of the exterior of the basin of the coupe, this appears inherent in the making. There is also a very minor abrasion to the interior edge, measuring approximate ¼ inch in diameter, and this too is not visible when inserted. A wonderful deeply architectonic form showing nice scale when viewed first hand.
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.
NOTWITHSTANDING THIS REPORT OR ANY DISCUSSIONS CONCERNING CONDITION OF A LOT, ALL LOTS ARE OFFERED AND SOLD "AS IS" IN ACCORDANCE WITH THE CONDITIONS OF SALE PRINTED IN THE CATALOGUE.