Empty fish pocket in white mother-of-pearl 1980

Empty pocket in the shape of a fish in white mother-of-pearl dating from the 80s. Width 23cm X 16cm. Height 5.5cm. Very good manufacturing quality with very thick mother-of-pearl. In excellent condition, unusual model. Another pocket tray from the same series is on sale in my shop (see the last 2 photos). In itself in very careful packaging.