A piece of computing history has arrived in New York, and is up for auction on Thursday.

The artifact is a 1958 prototype microchip, used by Jack Kilby of Texas Instruments in his Nobel Prize-winning invention of putting an integrated circuit onto a single chip. The prototype paved the way for the continued evolution and miniaturization of computers through microchips, a cornerstone of modern computing technology and found in everything from personal computers to the Large Hadron Collider at CERN.

The prototype has been put up for auction by Christie’s and is expected to sell for between $1 million and $2 million dollars.