Inaugural run at 1955 as 21/22 Delhi Nizamuddin – Hyderabad Southern Express (today’s 12721/22 Dakshin Express) connected Hyderabad to New Delhi since 1955. Then there was also a 51/52 Madras – Nizamuddin Express (does not exist today) which would run attached to the Southern Express between Kazipet and Nizamuddin.