Gang,
In the OP is the promised proper scan of the 4th edition $25 now posted alongside the 4th ed. $100. It's here as well, just to make navigating around easier.
Finally (for this update), the 7th edition 25-cent chip. These are pretty common, but I've been searching for one that is in relatively good condition. Most that I see are heavily worn and have a yellowed inlay. This one looked good enough to go ahead and get.
It's unique amongst the CC chips in that it has the photo of the standing bear and has the lettering and denomination on the sides. Really a very distinct inlay. It's a shame they didn't use it for more of their chips.
Enjoy!
A.D. (Gil)