Gruco brand 3 trays served as a 1930s system, DRGM

Rare gruco system service from the 1930s, drgm. Ingenious model of system rolling table, triple tray of the german firm gruco. Very beautiful period piece with original lasca, from the 1930s. 3 positions:  The folded tray: 2 trays served classic, By rotating the top shelf you get 3 trays with a blocking system,  Finally, by fully deploying the tray, the surface is doubled with a blocking system also. Wheeled, marked 'drgm' In good condition, pretty patina of the laque, a layer of polish pad has been applied to protect this patina without it getting more accentuated. Dimensions: h 71 cm / l 80 cm / p 42 cm, open tray 75 / 68 cm, closed tray: 38 /68 cm. Height tablets: 1) 29 cm, 2) 59 cm, 3) 78 cm.