Couldn't help resist posting this link to an eBay BIN/obo listing for a III cent silver piece. The clash is extremely strong on both sides! Enjoy http://www.ebay.com/itm/1852-AU-TY1-3-CENT-SILVER-ID-M630-/221046058177?pt=Coins_US_Individual&hash=item33775f2cc1#ht_2905wt_1161 -CB
I don't think is die clash. The trimes were so thin that patterns would show through the opposite side of the coin when minted with normal dies. Of course, I could be wrong.
Ah, that makes sense as well. My bad then. Either way, the strength of the designs on its reverse makes it a unique coin!