These Yugoslav-built examples differ in minor details, but principally the use of plate frames instead of bar frames, resulting in a higher boiler pitch. This in turn leads to distinct shoulder on the steam pipes (the American-built examples having straight steam pipes) and smaller domes which have a flat top so they are not higher than the cab roof.
Preservation
Several examples of both the original S100 base design and the Yugoslav-built derivative survive throughout the former nation as well as further abroad. Notable examples include 62-669, built in 1960, which had been bought by a preservation group in England, who had it modified to resemble a Southern Railway USA class, being renumbered as 30075, one higher than the last British Railways example. The engine has since been joined by 62-521, which had become 30076. Two examples were purchased by Marineland of Canada for operation in their park, but ultimately remained stored until donated to the Niagara Railway Museum.[1]