The Formosa 1888 Horse and Dragon issues of the 20 cash Green and 20 cash Carmine stamps in complete unmounted mint sheets of 25 were both sold in Phila China’s auction held on 28 August 2010 for a record HK$10,120,000.

While the Carmine exists in 2 sheets, there is only one Green in existence.

The sheets are in the private collection of Woo Loyuan and offered for the first time in over 30 years.