Three more that came to mind after seeing the stamped cards above:
[* Diamond & Pearl Piplup with San Diego 07 stamp (2007 Pokémon USA annual distributor meeting)
- Diamond & Pearl Turtwig with New York 08 stamp (2008 Pokémon USA annual distributor meeting)
- Rising Rivals Munchlax with Chicago 09 stamp (2009 TCPi annual distributor meeting)](https://thumbs.worthpoint.com/zoom/images1/1/0517/05/pokemon-distribution-promo-cards_1_46faa82a261efe57e8d21d9260719316.jpg)
If I remember correctly, only six of each were printed?
Also, I do see the Champion stamped XY Double Colorless Energy in the list, but what about the TOP 8 stamped ones? According to this thread made by @thundermoo only 48 of each TOP 8 were printed.
And another stamped card that comes to mind is the COLLECTOR stamped Dragon Majesty Charizard. Roughly 400 copies were made. Although this isn’t an official release by TPCi, so I’m not sure if you want to add it?
Greetz,
Quuador