Red Revenue
... that a Red Revenue stamp was sold for HK$6.9 million in a 2013 auction?
... that a <b id="mwB50"><a href="./Red_Revenue" id="mwB54" rel="mw:WikiLink" title="Red Revenue">Red Revenue</a></b> stamp <i id="mwB58">(example pictured)</i> was sold for <a href="./Hong_Kong_dollar" id="mwB6A" rel="mw:WikiLink" title="Hong Kong dollar">HK$</a>6.9 million in a 2013 auction?