Christian Friedrich Herold signed a snuff-box which he had painted at home. His style can be recognised by the contrast between the fore- and background reminiscent of stage-settings.
Cf. S. Ducret, The Colour Treasury of 18th Century Porcelain (Oxford 1976), p. 15 fig.11 for an example of a baluster coffee pot, painted by C.F. Herold.
Dr. E. Pauls-Eisenbeiss, German Porcelain of the 18th Century, Volume I (London 1972), pp.451-467 for comparable examples of harbour and shipping scenes.