拍品专文
An identical barometer in ebony, also inscribed '25 décembre 1721... à Rouen' was sold anonymously at Sotheby's, Monaco, 3 July 1993, lot 162, while a further pair of very similar barometers in tortoiseshell, signed Cleret à Rouen was sold anonymously at Sotheby's, Monaco, 5 February, 1978, lot 131.