If we're talking about a clip, the tooling would just lose pressure when either roller came in contact with the clipped area. Like this example I found on another forum: -http://www.coincommunity.com/forum/topic.asp?TOPIC_ID=46114 I reckon there is also a chance one of the rollers could catch the clip wrong and the adjustment bolt shears off. Then they would have a pan of undated coins to scrap/re-run. If the coin is oversized from a broken collar die, the adjustment bolt would shear off once again leaving them with a pan of undated coins to scrap/re-run.
I see where you're coming from. But I was thinking more or less than a slightly out around blank.I don't know but I personally think that is the cause for the difference in the font letters sizes. But what do I know.
Checking to see if the coin is round should be easy enough. I'm just saying that a marginal difference in pressure is normal tooling wear for this operation. Calling it an error would be like calling a weak die strike an error.
Whatever you want to call it, and error or variety or whatever. You should check out Ken's website. And see the prices he's asking for these dollars.
The asking's the easy part. The gettin' is gonna require some gullibility. Truthfully, when someone like Ken Potter, whose whole numismatic life revolves around errors and varieties, comes around, sometimes they can begin to see "Who's who are not". I see this large/small text thing on Prez dollar edges as exactly that.