In 1929/30, Mitropa put the three dining cars Dr4ü 10-12 into service for use on the RhB network. They were transferred to the railway in 1949 and were first modernized between 1968 and 1974. A second modernization of the WR 3810-3812, which has since become the trademark of the "Glacier Express," followed in 1982/83. Starting with the renewed conversion of WR 3812, the "Gourmino" color scheme was introduced in 1996, which eventually had to give way to the ACPE dark blue of the salon cars.

With WR 3811, Bemo is reintroducing a dining car from the WR 3810-3811 series in red livery and gold lettering into its range, following the sale of WR 3810 eight years ago.