Try the reverse directly below the eagles tail and shield. Take a moment and look and it pops out at you.
Thanks. One problem with my best guess is that I would expect some gold plating traces to be present. But I don't see any signs of this whatsoever, not even in the shield on the reverse.
Um... well, I sold it to a fellow forum member yesterday. Looks like I'm out of luck. On the upside, I got a really good chunk of money for it.