The present figure is from a series of Commedia del'Arte characters modelled by Wenzel Neu in 1764-1765, taken from engravings by Johann B. Probst based on drawings by Johann Jacob Schbler and published by Jeremias Wolffs Erben at Augsburg in 1729. Dr. Boloardo is taken from plate 2 of the Probst/Schbler graphic sources.
For a full discussion of the series, see Robert Schmidt, Early European Porcelain as Collected by Otto Blohm, Munich, 1953, pp. 230-236; Roda S. Soloweitschik, Thringer Porzellan des 18-Beginn des 19.Jahrhunderts in der Sammlung der Ermitage, pp. 54-56; Keramos, July-October 1978, pl. 29.
For another example of the model with red bows on the shoes, see anon. sale, Christie's, Geneva, 14 May 1990, lot 36.