Mine too and the Bird woodypecker make a whole in the center of my ancient Roman coin Theodosius 378AD. [video=youtube;_xrcPPcgKGo]http://www.youtube.com/watch?v=_xrcPPcgKGo[/video]
It does make you wonder doesn't it. Forget the 35 - pitted, heavily corroded, damaged - and still in a regular slab.
But Doug, if they are giving passes left and right on 200 year old US coins, it only stands to reason they need to give even greater passes on the condition of 400 year old coins, right?