Sri Lanka post issued five stamps on February 2nd, 2011 commemorating 25 years of service of the Viceroy luxury coal powered steam train. One of the stamps was also issued in a miniature sheet format, the one you see below and is the longest stamp issued by Sri-Lanka till date. It measures 123 mm long and has a denomination of 45 Lankan rupees (LKR), the equivalent of about 20 INR.
The train is in operation even today and is mainly a tourist service. Of its coaches, a couple are air conditioned and the train also has a restaurant and a bar.
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NOTE: Please click on the images for a larger view / closer look.