This coin was placed in cache GC2XN2Q on 08-23-2011. Unfortunately the cache went missing shortly after this TB was dropped. The cache was replaced and then went missing again, that was almost three years ago. The cache itself was archived by the CO in 2012 because it was gone. No container left to try and rescue this TB from. This should clear the request automatically.
Sorry your coin went missing, we have quite a few TB's out too and it is always sad when one vanishes.