1958 BR details:
BR Nos; 60001-60034.
Location; East Coast main line King's Cross to Aberdeen.
Origin; L.N.E.R. Introduced; 1935. Designer; Sir Nigel Gresley.
Driving Wheel; 6 ft 8 in. Bogie Wheel 3 ft 2 in. Trailing wheel; 3 ft 8 in.
Weight; 165 tons 7 cwt. Tender 64 tons 19 cwt. [Corridor 60 tons 7 cwt]. Length; 71 ft 0.5 in.
Boiler Pressure; 250 lbs. sq. in. Cylinders [3]; 18.5 in x 26 in. Tractive Effort; 35,455 lb.
Coal; 9 tons. 8 tons corridor tender. Water; 5,000 gals.
Classification; 8-P/6-F.

Notes: Based on the design of 'Great Northern' A3 and streamlined for use on high speed trains between London and Edinburgh. First in service 'Silver Link' ran the first two weeks of streamlined trains unaided and without problems after an impressive debut with sustained speeds of over 100mph just 25 miles from the uphill start from Kings Cross. Later, in 1938 'Mallard' exceeded 125 mph descending Stoke Bank with relatively wide cutoff. Several of the class were later timed at over 105 mph with normal scheduled BR trains. Speeds limited as much by signalling as engine limitations, some the best work was perhaps done in the mid-1950s with heavy trains and start-to-stop averages over long distances of over 70mph. Regarded by many to be a masterpiece of design.
Corridor tenders were used on about half the class, though different engines had different tenders from time to time.
60013 was built in June 1937 and during her BR days was based at King's Cross, sometimes with a corridor tender, she was fitted with a double chimney in 1958. She was withdrawn in April 1963 and cut up in June that year.