Vintage enamelled ceramic pocket emptier signed, 60s/70s

Square ceramic trinket dish in moss green and cobalt blue glaze, with an incised and stylized abstract design and a beautiful glaze. Signature engraved under the base (a symbol I can't identify). Vintage piece from the 1960s/70s, perfect as a hanging decoration or for storing jewelry, keys, etc. Very good condition, no cracks or scratches, just a tiny bit of wear underneath on a corner that isn't visible (see photo). Dimensions: 17 X 17.5 cm. Height: 2 cm. Weight: 538 g.