Swedish 1 ore 1926 brockage with strange crescent -Help!-

This is a very nice first strike brockage.
I need help with identifying the unstruck crescent shaped area. The coin is weakly struck opposed to this area. I can't think of any scenario that will end up to this.

Thoughts?

 

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Is your first photo supposed to look like this ?

 

No.. It looks the way he posted it.. That's why it is a Brockage!

 

I don't follow... Yes, if it's inverted. It's incuse, just like my picture shows.

 

Interesting coin then.

 

Yes it is interesting. No theories?

 

Another angle.
It's got the exact shape as another coin or planchet.

 

It's also a partial collar.

 

I can think of one thing that could cause that, the coin that stuck to the hammer die and made the brockage was struck on an elliptical clipped planchet. An elliptical clip planchet was struck, stuck to the hammer die and then created a brockage on the next planchet that entered the coining chamber

 

Wow! That really is a probable explanation. But it seem too good to be true. I feel it is so unlikely that such a rare error coin made my error coin.
Are there any other known examples of coins struck by an elliptical clipped coin?

 

I have really searched the web to find a similar coin, without any result.
I think I can conclude that it is struck with an already struck elliptical shaped coin that adhered to the hammer die. It is described (with no image) here: http://www.error-ref.com/brockages-aligned-partial-ellilp-strike-clip/

Thank you Conder101!

 

@mikediamond What is your opinion on my coin?

 

As the error-ref entry indicates, there are three possible causes for aligned partial brockages such as this. I suspect that it's a brockage from a coin struck on an elliptical planchet, but I can't entirely rule out a first-strike brockage from an off-center (partial) die cap.

 

@mikediamond Thank you.
I have to ask about the difference to another coin I have. It is very similar, yet very different. How come the crescent shaped part at the bottom is struck on this one, and unstruck on the other? I thought this one was struck by an early stage off-center die cap?

 

The prospect of the crescent not covered by the brockage-maker being die-struck on both faces depends on the vagaries of striking pressure. Striking pressure is, in turn, determined by ram pressure, minimum die clearance, and other variables. With respect to this 2 ore coin, I suspect it was struck by an off-center die cap. I'd need to see an edge-on view of the edge closest to the "2" before making a more confident determination.

 

@mikediamond Thank you for your time.
Here are some pictures of the edge, closest to the 2. The edge is very wide and almost conical.
Is it really the same type of error as the 1 ore?

 

The 2 ore coin shows a significant amount of horizontal lipping, which is characteristic of aligned partial brockages generated by partial die caps.