Friends, for those of you who may not be aware, this train then plying between Madras Central and Cochin Harbour Terminus, numbered 41/42 in 1975, was the ORIGINAL KERALA EXPRESS and not the 12625/26 TVC-NDLS train that is now more familiar to us as Kerala Express.
Later on say in the 80s, when the combined Kerala-Karnataka Exp was split into 2 distinct and separate trains, 125/126 was christened as Kerala Express to be in sync with TN/AP and Karnataka Expresses running to southern state capitals from NDLS .
After that the name of...
more... 41/42 Kerala Exp was changed to Cochin Express. This train later got extended to Allapuzha.
PS. Documentary evidence follows.