1c Parcel Post, Darrah Ty. III
Inverted Overprint in Blue (Q1 var). S.e. at left, used with 1c Green
(498), tied by "U.S. Postal Agency * Shanghai, China * R.D." oval registry
handstamp on cover with printed local addressVERY FINE. AN EXTREMELY RARE USED EXAMPLE OF THE ONE-CENT PARCEL POST WITH INVERTED DARRAH OVERPRINT. VERY FEW ARE KNOWN.
With 1978 P.F. certificate (Image)