A first generation, unopened 2007 iPhone is expected to sell for more than $50,000 when it goes to auction on Thursday.

The phone, which has a 2 megapixel camera and 8GB of storage, was given to Karen Green as a gift when she got a new job, Business Insider reported.

But Green already had a new phone, and moreover, the iPhone was not compatible with her existing cellular network.

Rather than open the iPhone, Green stuck it on a shelf. It remained there, “wrapped in a pair of felt pajamas”, for years.

In October, Green heard that a first generation iPhone from 2007 had sold for $39,339.60.

The cosmetic tattoo artist contacted LCG Auctions, the auction house that handled the sale and had found itself inund