The Chinese Postal Service used to be a  part of the responsibility of the Customs Service under the management of Sir Robert Hart. In 1897, Sir Robert put in place a series of reforms which led to the establishment of the Chinese Imperial Post Office. In the same year, the currency was changed from candarins and taels to cents and dollars, and so there was a shortage of suitable stamp stock. This shortfall was met by surcharging existing stamps with new values, and one of the stamps pressed into use was the Revenue three cents red, that was surcharged with values from one cent to five dollars. This philatelic example shows the variety two cents surcharge double, both inverted, and very rare.