Large antique French Impressionist landscape oil painting of a castle chateau by a lake signed Grootens

Large antique French Impressionist landscape oil painting of a castle chateau by a lake signed Grootens. French, circa 1950s. Unsigned, artist unknown. Oil on canvas. Wooden frame. Depicts a punt in the foreground and castle/chateau on shores of lake. Size of frame: 25.75 x 22.25 inches. Size of canvas: 21.75 x 18 inches. Size of front painting aperture: 21 x 17.5 inches. Weight: 2.1 kg (allow 10 kg volumetric weight once packed). Condition commensurate with age - various superficial marks & scratches, some damage to top right of canvas and a small repair to reverse and some minor knocks to wooden frame but all part of its charm and character. Priced accordingly.