Originally I bought 20 $20 plaques but ran out one cash game and had to put the hundos in play, as you noted. So when the plaques were reordered back in 2012, I added on 20 more $20 plaques and 10 $100 plaques. The $20s have no edgestripe and the $100s have the red edgestripes so you can tell what they are in stacks.
Correct. J5 did the design work on the Matsui PCA plaque group buy.
There were two different designs (both available in blue or red) for the PGI ceramic PCA plaques, with several denominations to choose from (choice of color there, too).