Clipped Planchet "Coins"

[Rollem]

Maybe some one could help me to understand better "Clipped or Incomplete"

http://www.lincolncentresource.com/Errors/ClippedPlanchet.html

From the examples above here at LCR and hundreds of others I have looked at lately a question arises.

How can a clipped planchet have also a normal looking rim except for the area it is clipped?

When a Planchet was punched from sheet then rimmed, A planchet as I know it is forced to roll or squeezed through the rimmer machine, and then minted.

It would seem to me to have happened after minting else the minting process would have left a portion of metal squeezed into the missing planchet area.

Second question: How can one legitimize a clip? seems very risky to me.

My brother has in his shop a industrial hole punch that will punch up to 1 inch hole in a 1/2 plate steel. I could clip any coin with the proper diameter and who would know better?

Recently a guy offered to sell me a box of clipped coins, no thanks my friend. Scared of them.

Any feedback to help me have more desire for a risky mint ERROR.

Thanks
James

[pman860507]

Well you have a few good point that I'm interested in hearing the answer.

[RWBILLER]

Artarian is the expert - he wrote a book about them.

[jallengomez]

Here's a good article for curved clips-

http://www.ngccoin.com/news/viewarticle.aspx?IDArticle=586

[Rollem]

Here's a good article for curved clips-

http://www.ngccoin.com/news/viewarti...?IDArticle=586

Good article, mostly stating the things I already believed had to be true in minting.
The expansion has been missing on a lot of so called clips.

Thanks
James

[abe]

This may help or it may not...

http://derbycitycoinclub.com/information_links/information_links.htm

[Maineman750]

James, I believe the question you are asking is basically the same for any error. You have to know how to authenticate it, and having it in hand sometimes makes it easier to tell. Most of the clips that have been posted have not had close-ups in the right area to give a definite attribution by those of us who are not experts in the error field.Maybe you can have your brother in law make a clip and then post it. We'll see if it gets by the experts.

[mustbebob]

Punching a hole to make a blank is one thing. Getting and using an upset machine is another. Pressures for making the rims are different for each coin depending on the metals used. Lots of good links here folks. Good topic.

[Rollem]

James, I believe the question you are asking is basically the same for any error. You have to know how to authenticate it, and having it in hand sometimes makes it easier to tell. Most of the clips that have been posted have not had close-ups in the right area to give a definite attribution by those of us who are not experts in the error field.Maybe you can have your brother in law make a clip and then post it. We'll see if it gets by the experts.

Good idea..Roger.

James

[jcuve]

If the ram pressure is high enough it can form perfect rims regardless if the incomplete area was enough to form a proto-rim across from the area. The best way of determining if it is real is to check for an elongation or subtle distortion of the metal flow on the devices immediately adjacent to the incomplete area (clip). Every example will be unique, but most have some combination of metal flow, Blakesely effect, proper curvature or the correct tapering to the edge of the clip.

Below the straight clip has a torn edge - another diagnostic - hard to fake. UNUM shows the strongest metal flow distortion. The '53 shows the Blakesely effect, but it is weak.

[Rollem]

Beautifully demonstrated and explained Jason.

I sure all that read this thread will thank you for posting this.

James

[atarian]

I think Jason said it best. Thanks for the picture demonstration.

[twoyankees]

Absolutely a Great post James, nice going! Loved it, and Jason did a bang up job with the illustrations. Just awesome. Tom