The 28s that had 20"/20.5"x26" cylinders against the 27s that had 17.5"/18"x26" cyls were rated to pull 10% heavier trains, but while the round top 85s were easy to spot in their original 28 form thanks to their thick smokeboxes the tell between the saturated & superheated Belpaires is the chimney.
add a skeleton here at some point
7 days ago