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Message:: [QUOTE="cpm9ball, post: 896718, member: 24633"]Many of the Morgans of the Treasury releases of the 60's & 70's never saw the light of day until that time. Those that came into contact with the canvas bags often had gorgeous rainbows depending on how much of the coin made contact with the bag. Some developed crescents because other coins covered parts of one another. Others developed textile rainbows revealing the weave of the bag. Of course, most of the coins away from the canvas were blast white with booming luster. There are actually two types of DMPL's. Those that were produced from brand new dies, and those that were produced when the dies had to be polished sometime in their production life. I like to call them original DMPL's and polished DMPL's. I think it was Bowers (can't remember for sure) who said that as a general rule, the first 500 or so Morgans struck from brand new dies had a tendency to be DMPL because, both, the dies and planchets were polished prior to the onset of production. After that, the dies began to deteriorate. Oftentimes in the course of production, dies had to be polished to remove clashes or other surface anomalies, and these can be readily distinguishable by, sometimes severe, polishing lines that you can see all over the surfaces of the coin. Original DMPL's are much harder to find than polished DMPL's. Chris[/QUOTE]