Hi Simon, I do not have an example but I have seen Tripled Die coins on the web. Any truth in this or good information?
Tripled dies are definitely a lot rarer than doubled dies, there are only a handful or so known for Lincoln Cents, and quite a few of them appear on proof coins for some reason. I don't know any site that would specialize in tripled die coins off the top of my head...
1DO-001 is the same as DDO-001. They are definitely abundant on ebay, but just be sure that they are actually the doubled die before bidding. http://www.ebay.com/sch/i.html?_trk....X1995+DDO&_nkw=1995+ddo&_sacat=253&_from=R40
non cents I think in the post you replied to the CT member was asking about the 1995 D doubled die . I only saw one on ebay and here is a link to it. http://www.ebay.com/itm/1995-D-1c-D...45?pt=Coins_US_Individual&hash=item2a388e9989