All locomotives were equipped with 3,500 - imperial - gallon ( 15,911 l ) tenders .
The first left Ashford Works in June 1920 , featuring a greater superheating surface area within the boiler as a result of operational experience with No. 810 .
All locomotives were equipped with 3,500 - imperial - gallon ( 15,911 l ) tenders .
The first left Ashford Works in June 1920 , featuring a greater superheating surface area within the boiler as a result of operational experience with No. 810 .