What is a 2c British Guiana Kaieteur falls stamp worth?

The 2c British Guiana Kaieteur Falls stamp, issued in 1850, is one of the rarest stamps in the world. Its value can vary significantly based on condition and provenance, but it has been known to sell for millions of dollars at auction. In recent years, one of these stamps sold for over $9 million, making it a highly sought-after item for collectors. However, specific valuations can fluctuate widely based on market demand and the stamp's condition.