A unique First Day cover issued by Australia Post at the 2004 Hong Kong Stamp Expo. Unique cancellation depicting Taj Mahal with the caption 'India Post in Hong Kong' cancelled on a '100 years of Kalka - Simla Railway'. The FDC also commemorates the Tarcoola - Alice Springs Railway in the Northern Territory, which opened on 9th October 1980. - M. Senthil Kumar