The current record holder is an Inverted Jenny priced at $2 million that sold last fall, and the most expensive stamp in the world is a 1-cent magenta from British Guiana, which fetched over $8 ...
although the global stamp record remains at $9.5 million after the 2014 sale of a 1-cent magenta stamp from British Guiana. Why is the Z-grill stamp so valuable? The Z-grill stamp might not have ...