The Frontier Mail made its debut on 1 September 1928. When it was first introduced, the train ran between Ballard Pier Mole Station, Mumbai and Peshawar. After closing down of Ballard Pier it started operating from Colaba, Mumbai and Peshawar, the latter of which is now situated in the western region of Pakistan. Before long, the train was able to lay claim to being India's fastest long distance train. In 1930, The Times of London described it as "one of the most famous express trains within the British Empire." During the autumn months between September and December, the train used to depart from the Ballard Pier Mole station. This was for the convenience of the British who arrived in India by steamer.
AFAIK,...
more... today neither of these 2 stations viz. COLABA and BALLARD PIER exist on the railway map. ANY VIEWS ?