Hooray!
I was right in my guesses!
A few days ago, I concluded that this
Dutch painting at the junction of 17 and 18 centuries.
Today I received a reply from Christie's of London! They attributiruyut this artist as a
Gerard de Lairesse (1641-1711) (Gerard de Lairesse) Estimeyt 3-5 thousand pounds!
Here is the most significant examples of de Lairesse!