Late Night Quiz Time....
In ER there is continuity in Train No. except one...
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13141/42 Teesta Torsa Exp
13145/46...
more... Kolkata Radhikapur Exp
13147/48 Uttarbanga Exp
13149/50 Kanchankanya Exp
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Can u guess the missing train No 13143/44 belonged to which of the premier trains which later was converted into Superfast..???