Zenith sideshells  

Here are photos of the zenith production sideshells I mentioned in the other post. They are not marked "Zenith" but having had a great many zenith armshells over the years, I am confident they are of the same era as the post rope-edge or "transitional" zenith armshells. The timeline makes sense as well. The armshells were the first Eames fiberglass design introduced, with the sideshell following shortly thereafter.

Like I mentioned, they are in 2 of the original 5 colors: parchment and lemon yellow. They have the same fiber content as the transitional armshells (high content but more uniform, not as swirly as the earliest hand-laid rope edge chairs) and are translucent as well. The shockmounts are the same color and texture as the large zenith shockmounts the difference being the smaller size and absence of the metal washer. The parchment chair has an X base with slip-on boot glides while the lemon yellow has a lounge height H base with an unusual glide made of rubber and stainless steel that I think clearly predates the nylon swivel glide.

Here is an example of a seafoam green sideshell on an eiffel tower base from the Eames catalogue raisonne. Also from this transitional period; note the color, fiber content and the second generation eiffel tower feet. It also shows the red Venice label, the label you will most likely see on a transitional armshell if it is not missing all together. This is the same label I believe would have been affixed to my two sideshells. They tend to be quite fragile and would come off rather easily when someone cleaned the chair.

http://www.eamesoffice.com/vintage/worksheet_detail.php?id=43