Unopened first-generation iPhone set to sell for $50,000 at US auction

Phone from 2007 with 2 megapixel camera and 8GB storage had sat on Karen Green's shelf for years before she realized its worth

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.