This is a superb antique set for Sherry or Port wine for 6.
From the Art Deco period and signed DAUM NANCY.
Decanter: hight: 21,5 cm diameter: 11 cm
Glasses: hight: 7,5 cm diameter: 5,5 cm
Diameter of the tray: 29,5 cm
Period: 1920 - 1930
FOR A NICE TABLE !
Here is a converter inches / cm to help you with the dimensions: