For those of you who , like myself, purchased the Pennsylvania Lines #7109, some research revealed that this engine was built in 1912 as an H8sc. In 1916 the engine was rebuilt as an H9sa. Apparently the engine was scrapped in 1948.
On another note, concerning other H class engines......Given the number of these engines there were many variations. Some of the more interesting images highlight the variations in the pilot and the earlier oil headlight. For your entertainment attached are some of the variations. NOTE: The web listed these engines as H class so please don't shoot the messenger for inaccuracies........