Kevin Flynn Auction Of Certified Die Varieties At Heritage Auctions

DoctorBurnzy
Glad you were able to find something you needed. That is a nice bold digits in the denticles. MPDs have not really taken off, but IMO that is good news as they are super cool and still can be found. I believe there were about 400 MPDs listed in the book, but a major part of the book was dedicated to trying to figure out how they happened.
One note I remember, they seemed to be much less frequent during every 20th year, such as 1890 1900, which leads to the conclusion that there was increased quality control during those years. They are obviously a dramatic mistake/offset when viewing through a scope, but usually off by 1/10 of an inch on the die.
Kevin

Lessons learned in auctioning
When auctioning coins, learn what the Buyer's Premium is. Most are 20%, but if below a certain value, will be fixed. Heritage was $29 BP if below 150 I believe. If you have coins below this level, you should combine into lots to achieve above that level. I had about 60 Kennedy half dollar doubled dies, most were valued about $30, many were only bid on at $1, others were not bid on at all.