Actually, he mentions the base was taken from another chair.
I found two Herman Miller Eames chairs being thrown away. The bases were missing, so I pulled two chrome chair bases off some old desk chairs and mounted one of the Eames chairs onto a base.
It's definitely a Plycraft[1]; look at the armrests vs a real Eames[2].
[1] http://p2.la-img.com/21/21630/7445736_1_l.jpg
[2] http://the3125.files.wordpress.com/2010/10/eames-lounge-chai...
it's a plycraft replica. they are easy to spot because the chair base only has 4 legs, while a genuine eames lounge chair sold by herman miller or vitra will have 5 legs on the chair and 4 on the ottoman.