Eric,
I looked at the TB that you are referring to; the Basel-Stadt Geocoin (TB39N1E). A very attractive coin indeed. However, I did not see that coin in the Millenium Found cache (GC2KZ88), when I picked up the Pirate Duck TB (TB3BDEV). As you can see by the pic of the Pirate Duck TB on its log web site, I don't think that it is possible for me to confuse the 2 TBs. I moved the Pirate Duck TB on to Cliche Cache (GC1K26T) on 10/10/12.
I do share your frustration when a TB is picked up and not logged by a fellow cacher or is simply taken as a piece of booty and not moved on.
However it wasn't me that took it.
Sorry.