Hey Zoom....
I'm pretty sure the emblem you're speaking of is a white round badge...with a snake in the center and the word "Cobra" about a 1/3 way up from the bottom. The perimeter of the badge has a red rim around it.
This is the same emblem (I believe) as the one on the front. These emblems are available from the Finish Line.
www.cobraaccessories.com