18th Century Rococo Canvas...a Painter's Studio With His Model...signature?

Beautiful painting made in the pure Rococo style of the end of the 18th century and which represents a charming scene in the studio of a painter, with at his side the young woman who serves as his model and who contemplates the work of the artist... The work is signed lower left but the signature is difficult to interpret / see the two photos n=° 10 & 11. Note: this canvas has never been examined by an expert but it would deserve investigations to try to identify its author: indeed, everything in its finesse and its quality suggests the presence of an "excellent-hand" as we say in the jargon of experts and art dealers / notice to research enthusiasts... - a small piece of fabric (old restoration) visible on the back of the canvas - Canvas size: 27 cm x 22 cm Frame: 37 cm x 32 cm - ask me for other photos if necessary -