A couple of weeks ago I dropped a "Masters Of Space" geocoin in Friendship Trail at Stonewall Jackson Dam. It has it's own icon and is still there (according to gc.com).
Also, I picked up a Mini Fire Fly geocoin from Cave Cache this weekend. It also has it's own icon.
I checked a couple of profiles from the group looking to see if they had the icons. Neither had the icons. If I still have the one coin in a couple of weeks I'll bring it to the new B&W night.