A very similar clock, with the same porcelain case, is illustrated in Encylopédie de La Pendule Francaise by Pierre Kjellberg. The illustrated clock has the same yellow porcelain which is signed “Manufacture du duc d’Angoulême”.  Illustration A. p. 341.

The Angoulême factory was started by the nephew of Louis XVI, being the oldest son of the Compte d’Artois. The factory was in production from 1781–1793.
 

 

Measurements

DIMENSIONS CM INCHES
Width: 31 12
Depth: 18 7
Height: 46 18