Herman Miller Logo with Flame Symbol  

Anybody know the what the flame symbol signifies? I have owned many Eames shells over the past 10 years, but this is the first one I have seen with this flame symbol.

Also, does the flame symbol give any indication about the approximate year the chair was manufactured?

One more thing, the back and underside are painted and I'd like to strip it to reveal the glorious dark red fiberglass. What type of stripper is recommended to maintain the original fiberglass finish?

Thanks.