The first superheated Pacifics the meter gauge Leopoldina received were numbers 306 to 315. They were delivered by Beyer, Peacock & Co. in 1925. Ten and eight more followed in 1927 and 1928, respectively, bringing the total to 28.
They had a Belpaire firebox that burned wood. Despite the small driving wheel diameter of only five feet, they were used for express and night trains. Their use in this role only ended with the introduction of diesel traction. Number 327 has been preserved to this day and pulled tourist trains in different regions.