China 1944-45 Chungking Central Trust printing, Parcels Post set of 6 to $20,000 red-orange, SGP711/16.
A very attractive and fresh quality mint set. The $20,000 in particular is very scarce.
Parcel Post Stamps were not on sale in unused condition, but were affixed to parcels and cancelled by postal officials. In 1948, permission was given for cancelled stamps to be sold to the public. Unused Parcel Post stamps such as these were probably from stocks seized by the Communists.