Thanks to David Spragg, I've added a couple more plaques to my collection of the square-cornered plaques made by Chipco. The California $8 items are real; the others are samples.

I'd like to add others if you have extras to sell. The one from Rene's chip show would be nice. I have no extras of the Chipco plaques but have lots of other stuff to trade if I know what you like. Will also buy them, of course.