Art Deco period lithograph, portrait of an elegant woman

Very nice portrait in medallion of an elegant, art deco period, around 1930. It is a lithograph or an engraving, but which suggests a pastel at first glance. The table is signed at the bottom left (signature to be identified). The portrait is framed and under glass. The back is clean. In good general condition with some small insects between the glass and the portrait. The frame is made of vanilla painted wood. Ready to be hooked. Height: 47 cm. Width: 37 cm. Weight: 1.5 kg.