There are several prototype Liberty Dollars that have found their way into the hands of collectors over the years. I'm sure that there are some that I do not know about, but the ones I do are described on this page. I believe the one ounce silver Liberty Euro belongs on this page too, because it was never offered to anyone except two individuals who were very close to the later efforts of BVNH (Bernard Von NotHaus), and they bought all that were available. I am, however, going to leave it on the $20 base page as #60.
The next prototype to come to my attention was the one ounce Freedom Naked back. Prototypes were struck in both silver and bronze. The quality of these samples is very superior to the quality of the FREEDOM torch back (#67), which was the last one ounce silver piece to be distributed by Liberty Dollar, and every bit as good as the 2008 $20 naked back (#57). To the best of my knowledge, only three sets of this silver/bronze prototype have made it into the hands of collectors. Word from a reliable source is that only five of each were struck. I have one each of these pieces. Feel free to make me an offer. If you want them badly enough (i.e., offer an outrageously high amount), I just might sell them. That goes for the dateless 1/10 oz above and the copper mule below as well.
The third prototype piece I learned about was the one ounce copper 'mule' discovered by Jeff Kotchounian. Here is the original entry that I used to have on the page with the production coppers.
Newly found Liberty Dollar Copper prototype!
This piece was located by Jeff Kotchounian at a mint that was being considered for production of the Liberty Dollar one ounce copper pieces in 2009. An obverse die was sent to the mint so that they could do some trial strikes that would demonstrate the quality of their product. The mint used a stock, generic one ounce die that they already had on hand for the reverse. I purchased three of the less than 30 existing pieces from Jeff (not for sale unless you offer me an ungodly amount). The quality is astounding compared to all of the other Liberty Dollar copper specimens. Unfortunately, the cost of this quality was too high and the pieces would have cost more than their intended one dollar face value, so production runs of pieces using the correct reverse die were never made. In June of 2011 Jeff was able to acquire the specimens that the mint had not sent to Bernard von NotHaus and has sold them to premier collectors. The photos below were sent to me by Jeff. This piece is commonly known as the Copper Mule. Mule is the term mint personnel use to describe a piece that has been made by throwing together obverse an reverse dies that are not meant to be used together.
(highest known sale price so far is $850 by Dave G. on 5/14/2012)
The last prototype Liberty Dollar that I have knowledge of is the $50 Torch Back. The only one ounce $50 base silver pieces released to production were the naked back (#58) and the tenth anniversary (#59). This prototype piece, however, was never produced in quantities. As a matter of fact, I have been informed by someone who should know that only two pieces exist (unfortunately I don't have one) other than the ones seized in the raid by the FBI. However many that was, it can't be much. If you run across one, it means the FBI is selling off the material they seized from Liberty Dollar.