The original 1889 boiler steam radiator system in our old Victorian house near Widener University was converted to a gas fired burner in the 1970s and it was still working great when we sold the house in 1990. Water feed system was converted to an automatic float valve when we lived there so no more periodic checking of the sight glass and turning valves to keep the water level right.
3800 sq ft of living space with 18 rooms on 3 floors being heated by 17 radiators. It was very efficient and worked well.