Nizam's Guaranteed State Railway
Nizam's Guaranteed State Railway (NGSR) was a railway company operating in India from 1883 to 1950. The company began with a line built privately by the HEH, the Nizam, which was owned and operated by the company under a guarantee from the Hyderabad State.
Source: Wikipedia — Nizam's Guaranteed State Railway (CC BY-SA 4.0)