Eight examples were delivered by
Maffei in 1852; the remainder came from
Hartmann. The machines by Hartmann had great similarity to those of the
Class A IV, which were manufactured at the same time. Unlike the Hartmann engines, these locomotives also had a
steam dome. This was later added to the Hartmann variants. All the engines had a
Crampton boiler with smooth tubes and a
Kirchweger condenser.
Eight examples were delivered by
Maffei in 1852; the remainder came from
Hartmann. The machines by Hartmann had great similarity to those of the
Class A IV, which were manufactured at the same time. Unlike the Hartmann engines, these locomotives also had a
steam dome. This was later added to the Hartmann variants. All the engines had a
Crampton boiler with smooth tubes and a
Kirchweger condenser.