Don't know where you have got these Wrong information , but still thanks for coming up with this kind of list. Just Update correctly for SER and ECoR zone.
SER Zone: Legendary Howrah Chennai Mail. Its running from 1900. Its 116 years Old Train. Gitanjali is just a "Child" infront of it.
ECoR Zone: New delhi Puri Purushottam Express which is running from either 1980 or from 1993-94 , either One of these Two years.