Peter Kerslake says " They don't come much cleaner than this with an immaculate 61577 fresh from the Works.
The earlier B12s had a valance over their driving wheels, but as and when they were rebuilt these were removed, but they were still handsome engines. 61577 was the seventh of the ten B12/2s built in 1928 to the earlier seventy classed as "S69's" in their Great Eastern days."