Pair of miniatures in grisaille old painting

Very nice set of two miniatures of a waterfront in shades of blue. In their round frames in light wood and gilded copper hoops with palmettes. Gouache on paper. France, 20th century. Diam: 7cm at sight. Signed duc for "ducommun". Good general condition. Rubbing on the frames and discreet traces of humidity on the edge of the painting. Will be carefully packaged, I cannot however be held responsible in the event of loss, theft or damage by the postal services.