While growing up in a village in Singapore, Richard Tan and his brothers used to rummage through their neighbours’ rubbish bins looking for discarded letters.
They wanted the foreign stamps on the envelopes, which to them provided a small window on a much wider world.
Several decades later, Mr Tan has turned that childhood hobby into a prize-winning collection worth millions.
He’s among an estimated 60 million rare stamp collectors globally – two-thirds of whom are from Asia.
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Source Credits: Leisha Chi in BBC, from Singapore