Stephenson's 0-4-2 Goods Locomotive, Stanhope and Tyne Railway, c. 1834

From Wescott:

From a lithograph in F. W. Simms' Public Works of Great Britain, 1838. Probably one of the three built for this line in 1834. These had 14 in. by 18 in. cylinders. Heating surface c. 420 sq. ft. Outside sandwich frame, inside connected (i.c.) driving links. . Loose eccentric valve gear.