59/60 was actually started as a special between Madras and Hyderabad
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59/60 Madras-Hyderabad Charminar Express from 5 days a week to daily -- 88-89 budget
59/60 Hyderabad-Madras Charminar Express from 3 days to 4 days a week -- 87-88 budget
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Later re-numbered as 6059/6060. From there it became 7059/7060. After superfast it was 2759/2760.
What do mean by "Why it was started already having Chennai Hyderabad Express."?