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Message:: [QUOTE="physics-fan3.14, post: 2533124, member: 19165"]Well, the conditions would have to be just right for that to happen - but theoretically, yes. If all of the coins in the roll were from the same die (which isn't necessarily the case - the coins often get all mixed up), and if there is some large feature that you can easily see, then the die can be tracked in a single roll. I have opened a couple of rolls before where ~10 of the coins were clearly from the same die, as identified by a large rim cud. The die was near the end of its life, and was deteriorating rapidly. I didn't put all 10 in order, but there was one that was clearly an earlier state than the last one. Theoretically, however (and this would require a very high degree of magnification), each strike produces a tiny amount of wear on the die and could be placed in order of strike. Practically, the die state is most important when a new die break, clash, polishing, or further evolution in the life of the die appears. You can watch a die break grow over the life of the die (there are a number of Capped Bust Half dollars where this is true). One of the things the John Reich Collectors Society does is they will designate a die variety for people to bring to a meeting - everyone who has one brings one. Then they compare, and you can put them in order of striking by die state.[/QUOTE]