Flat plates art deco pattern set of 4

Set of 4 flat plates with art deco style decorations, stenciled on a light beige color enamelling (more sustained than in the photos). They are usable but each have defects, clearly visible, often in relief, which seem to me to be of origin for the most part... Which is quite strange by the way... Maybe downgraded dishes... Which will also explain the lack of stamp at the back... Some stains and traces of wear too. They measure 22.5 cm in diameter and 2.4 cm in height. The whole weighs 1.3 kg.