Vintage Eames glasfiber shells  

Hi.

I am wondering from which period my glasfiber shells are from?. And if they are rare or not ?

They both have three embossed dots arund a embossed Z and an embossed Herman Miller logo.

Also they have some of the Herman Miller label still visible but most of it have been teared off.

The shoockmounts are in a poor condition (very brittle) but rest of the shells are in a very good condition.

There is no rope edge on theese shells.

I will be glad if someone could help me with theese questions and a causius evaluation.

Thanks

Peter
<img class="wpforoimg" src=" http://d1t1u890k7d3ys.cloudfront.net/cdn/farfutu