Hand thrown art pottery plate/tray, made in Japan and signed by potter. This would be lovely on your vanity for your favorite parfum, or jewelry/valet tray. Of course it could be used for serving or a lovely tray to display small glasses, see last photo. Blue glasses shown are sold here:
https://www.etsy.com/listing/626170495/vintage-mid-century-blue-glass-etched?ref=shop_home_active_8
Measures 9 3/4 x 6 3/4 x 1 in tall
Materials: Ceramic.