It was Club Penguin's 392nd pin, and the last regularly hidden pin, as all following pins were obtainable from the Memory Book.
It is also the last pin to be hidden in the Coffee Shop. This is most likely a callback to March 2006 when Club Penguin's first pin, the Shamrock, was also hidden in the Coffee Shop.
The icon on the Club Penguin App instead correctly contained all eleven.
Before release, it had a slightly different icon in mobile game files.
According to a schedule of updates posted on the What's New Blog,[1] it was supposed to be released on January 26, along with the issue 565 of the Club Penguin Times. Both were postponed and released five days later.