1868 George Washington B-Grill

The 1868 George Washington B-Grill is one of the only examples known to philately of the four 3-cent b grill stamps discovered together on cover in 1969. a key to a complete collection of United States postage stamps and one of the rarest stamps in the world.

The real B Grill is distinguished by its size–22 points broad by 18 points high (18 x 15 mm)–and the grill's points-up orientation, which is visible on the back as a pyramidal (male) grill impression. The four known 3c B Grill stamps were discovered in 1969 on a cover addressed from Mason, Texas, to Germany in February 1869. The B Grill was implemented following the 1867 testing period and after the first two months of normal 1868 grill manufacturing, according to the shade and paper. Perhaps the B Grill was born out of the need for a grilling device to replace one of the two devices.

This was sold for more than $1 million in 2008 making it one of the most expensive rare postage stamps.

Price: $1.035 million