Kennedy half DDO & DDR? Also struck off center?

im trying to understand anvil die collar clash... (for a different coin)

http://www.error-ref.com/part_iv__die_errors/
Collar clash (CW 6/11/07)

• Hammer die
• Anvil die (uncommon)
• Floating collar clash (CW 4/17/17)

 

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Hi
A Collar clash is
a piece of a collar that breaks off, lands between the dies and is struck.
The collar is metal.

The collar is a circular piece of hardened steel which acts as the wall of the coining chamber, which provides the impression for the uniform circular outline around the coin. As its name implies, the collar prevents the striking pressure from spreading onto the flange.

This is a great little video of the process of how a hub and die works. Enjoy!

 

Ty! Cool video. What would be an example of an anvil die collar clash vs a hammer die collar clash?

 

Hi
Yes, good questions.
imho,from my understanding. either result will have a misaligned die strike or mad.
misalignments of the anvil die are rare, principally because the neck of the anvil die is confined by the collar.

http://www.maddieclashes.com/misaligned-anvil-die/

As a mechanic specialist for over 25 years. I really enjoyed learning how it all works and how errors and varieties occur.

 

I like your style..

 

I see that makes more sense to me now.... I think... So collar clash, anvil or hammer, results in MAD? It's more the reason for the error rather than the name of it? & So then hammer collar clash would cause obverse MAD & anvil collar clash would result in reverse MAD?

 

Hi
Yes to Q. #1

Q. #2 each error is the reason and because of that we have the name.

Q.#3 the collar creates the rim.

The die(s) creates the impression.

If one is offset it can create many errors.

Such as:

-mad obverse

-mad reverse

-Doubling numerals /letters

-Clipped planchet...ect.


Hope this helps!

 

Sorry,
Let me rephrase question 2.
For each error there is a reason and for that we have a name for that error.

 

Hi @Charlie Cliques ,
I just wanted to bring this thread back to the front because your thread has a lot of great information for new collectors!
Hope that’s okay!

 

thank you it does