Thanks for the finding. Geyuan is not in the Summer Palace. The two gardens are not even in the same place. The Summer Palace is in Beijing, while Geyuan is in Yangzhou, more than 1000 kilometers to the south. Apparently the designer picked the plate and liked the design, and used it on the Geyuan medal. This was a project by Shanghai Mint, not sponsored by the team, and therefore the design was not scrutinized. It is a wrong medal, in that sense. The artist who designed the plate is still alive, and there may be copy right issues. We will see.