By 1886 there were only nine cars in the ABD class. The cars were built between 1881 and 1883. There was one conversion listed for about 1882. The ABD class was similar in design to the _YZ_ class. The class numbers were 1 to 18.
Between 1889 and 1891, three cars were transferred to other service.
Car ABD 8 was most interesting. The car was was altered to _B__ 380 in 1889. This suggests the car was originally a standard carriage with one compartment used as a van section or that the van was fitted with seating and the cupola section blanked off or removed.
Twelve were built new during 1893/1894.
Five cars were transferred to other service between 1898 and 1903.
In the 1910 recoding the class was relettered to XYZ_. The numbers were altered to fill gaps when the cars were relettered.