@joshius is our main man collecting coins and pins around here, he might your best bet to ask if he has seen that pin for sale recently.
In his collection thread you can also see that that pin was very hard for him to find, if you want to see an very impressive pin and coin collection you should for sure check out his thread. Here is a link:
www.elitefourum.com/t/joshius-collection-thread-q-a-video/18686/1