I still have many of these coins and they are too beautiful to peel. Im going to keep them. I think the way you have gone about this to be quite foolish.
Knowing that bitcoin on them is unrecoverable makes them worth significantly less. Sadly, I doubt even the interesting history these coins have developed because of Mathews handling etc etc will ever make it worth NOT peeling then. With coins that are KNOWN to be at issue it seems to be the smarter move.
Where coin series have been shown to be good, and there were some I believe? Then yes, hold on to them unpeeled... but of course its your call.
I've chosen to redeem all that I have but maintain them in good condition once peeled.
Viz