R. Goodfellow
298
Yes, it appears to be the original version of the Eames Time-Life chair.
The chair in the drawing is a later version that was developed to be a desk chair version with five-star base, casters, and a tilt mechanism. Many more desk versions were produced than the lobby version.
I used to work for Herman Miller in R&D and marketing, and used to buy and sell vintage Miller. It's been a long time, but let me know if you have other questions. Happy to help.