Did anyone not notice the die or planchet slippage that caused a shadow type image above the word pluribus. Reverse image post # 3. What type of encasement would cause that?
When there is excessive force applied to the planchet during a strike, metal is forced into the minute clearance between the die and collar. It leaves a thin sharp edge protruding perpendicular to the face of the coin on the rim. You could try and make a case for the coin being struck in the wrong size collar but I don't have knowledge of one with a taper.
What you are describing is what this coin has, a thin sharp edge on the reverse protruding perpendicular to the flat surface of the coin. Error-ref.com Collar deployment error / partial collar / flange with bevel.
So it's been a few days and no new post. I wast hoping someone new might pop in. I am kind of disappointed that all 6 posters got this one wrong. I realize it is hard to tell somethings just from photos, but I feel like I got shot down pretty quick. It must be a quite rare misstrike as not to be reconized by others. I surly have a better insight as to what to expect when posting here at Coin Talk. Thanks to all, for encouraging me to do the research needed to understand what it is.
Have you looked into how Lucky holders are struck? The coin is pressed into the holder at the same time the die strikes the holder. Different dies and different types of holders will create different edges and rims on the coin. I can post a few example images if you wish. Hope I'm wrong and you have something really cool. I'm just not seeing it.
I may be wrong here but I was under the assumption that the reverse was the hammer die; which if that is the case, the collar would be on the obverse die. I've not witnessed finning on the reverse rim of a coin, it's always been on the obverse. But I do admit I haven't seen everything, yet.
It slides over and around the anvil die and is raised up after the planchet is placed over the anvil die, does it not? I didn't say it was attached.
Thank you for your post. Do you mean struck on a blank, as apposed to being struck on a planchet? A blank would have a larger diameter that may not fit into the collar?
Yes. But my speculation is based on the lack of any trace of a persistent proto-rim along the outer margin of the obverse face.
Thank you for your information! I have a better understanding of the coin. And I feel more confident being able to share this information.