This listing is for the set of two vintage Intel chips shown.

These are both new old stock from the original Intel shipping tubes. They have not been handled except for the photos. They have never been socketed or soldered and they are not stained or corroded. 

The 3101 64 bit bipolar Static RAM was Intel's first product. Note that this chip is the original version not the 3101A revision.

The 4004 4 bit CPU is of course famously known as the first microprocessor chip.   

Intel was formed in 1968 by former Fairchild employees Gordon Moore and Robert Noyce along with venture capitalist Arthur Rock. 

Noyce is also notable as the inventor of the planar silicon integrated circuit which was an extension of planar silicon transistor invented by his Fairchild co-worker Jean Hoerni.  Authur Rock was a genius of his own kind with great foresight for things to come. He was also an early investor in Apple, Teledyne, and Scientific Data systems. These men were both the technical and business development backbone of the company.

With a goal of producing silicon memory to replace expensive magnetic core memory, Moore, Noyce, and Intel's third employee Andy Grove had within one year set up a silicon foundry and produced the 3101 RAM in 1969, an astonishing technical and organizational feat of engineering and manufacturing. What they accomplished in those first few years will be admired and studied for many many more decades to come.   

Those first chips were made on two inch wafers. That was as big as pure silicon crystals could be grown at the time. Modern wafers are 18 inches in diameter and can be cut so thin they are flexible.