German School 18th.Century. Study of a young lady in a bright blue dress looking almost seductively at the viewer, signalling not to speak with her finger on her mouth and an open book on the table next to her, The Secret. Composition after an engraving by Pierre Maleuvre 1740-1803, tempera on vellum stretched on wooden panel, Circa.1770. 24.5 by 31 cms. Image. Presented in a period carved ebonised fruitwood frame.