The Darjeeling Himalayan Railway A Class steam locomotive used on the Darjeeling Himalayan Railway in West Bengal, India. It was the DHR's first standard design of locomotive. Originally designed and built by Sharp, Stewart & Co. in 1881. The second batch of locos were built the following year by the Hunslet Engine Company, under sub-contract by Sharp Stewart. In this time the design was modified and the locos were fitted with an additional saddle tank and coal bunker. The final two locomotives were built by Sharp, Stewart in 1883.