Sugg "Littleton" gas lantern

Picked this up as an interesting little restoration project.
This Sugg gas lantern was used in the waiting room of Hindley railway station near Wigan in the early 1930's.
Has been knocking round in somebodies garage since it was removed and is it in quite poor condition but amazingly spares, such as burners and a brand new glass bowl has already been sourced from William Sugg & Co who are still in business today!
The valve is seized but I'm sure with a bit of heat I can free it all up and get it working, or at least cosmetically presentable.
If worse comes to worse, a 160w ML could be used....