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 Replies: 17 / Views: 2,643 |
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Pillar of the Community
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4000 Posts |
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Pillar of the Community
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Pillar of the Community
Canada
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Looks like a clipped planchett to me. Notice the blakesly (SP?) effect right across from it in between IN God....
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Pillar of the Community
 United States
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Thanks, wasn't sure. First one I have found.
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Pillar of the Community
United States
2600 Posts |
Color me a skeptic but I don't think so. 1st the radius does not look uniform. Almost straight on one side and strongly curved on the opposite. And that Blakeley effect looks more like a dent than weakness of strike.
Jim
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Pillar of the Community
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Thanks again. I've heard the term "Blakesley's effect" before and just resarched it. Now I see what you were looking at to diagnose it. Thanks for the lead. I always like learning something new and it seems like it happens every day here.
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Pillar of the Community
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Jim1953, it was the "straight" part of the clip that made me question it to begin with. And the opposite side does look like a dent to me as well. Althogh I had heard of Blakesley's effect, I didn't know what it was. On the reverse, opposite of the clip, the rim is just barely flattened. Nothing like the obverse. When I took the pics, I didn't realise the opposite side of the coin needed to be in the pic. So, I focused on the "error".
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Pillar of the Community
United States
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Pillar of the Community
United States
4000 Posts |
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Pillar of the Community
Canada
693 Posts |
I could be wrong. It may be PMD. Good eye Jim. |
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Pillar of the Community
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Bedrock of the Community
United States
12437 Posts |
Part of the confusion from the appearance occurs due to the improper term this error is frequently called- clipped planchet vs. incomplete planchet. A clip would imply that the coin or planchet was physically clipped at some point. This error occurs when the sheet stock of metal used for planchets is either advanced out of alignment or shifted during the punching, i.e. overlapping punches produce an incomplete planchet. The perfect curvature of the overlap punch is sometimes forced out of round due the the flow of the planchet during striking. You can also have straight(long edge of the sheet), ragged(untrimmed end of sheet), elliptical, and multiple.
There are a few diagnostics that can be used to identify a genuine incomplete planchet. The Blakesley Effect may or may not be present depending on the size of the "clip". The rim milling or upsetting involves using force spun opposing pressure on a planchet to upturn the rims. Since it is done using opposing forces, both sides of the coins need to make contact otherwise the pressure will be inadequate and you will see some weakness opposite the "clip". There will also be a natural flow of metal towards the missing area when the coin is struck and the "clip" will be slightly tapered and not sharp.
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Pillar of the Community
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So, clipped planchet is an improper term and it should be called an incomplete planchet? And would there be metal flow even if Blakeley's effect were obvious? In other words, if I were looking at a coin at a dealer's shop and Blakeley's effect were present, would I want to confirm the metal flow to deem the error genuine?
I'm not seeing metal flow on this coin, but it is pretty dirty too.
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Bedrock of the Community
United States
12437 Posts |
Yes, the technical name is "incomplete planchet" although it is quite common to see it called a "clip" and even I am guilty of using that term occasionally. If you see the Blakesley Effect, that should guarantee it to be genuine. The metal flow towards the clip can be a bit more difficult to detect but you can easily learn what to look for after seeing enough of them
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Pillar of the Community
United States
4000 Posts |
So what is your opinion of this coin?
And would there still be metal flow regardless of Blakeley's effect?
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Bedrock of the Community
United States
12437 Posts |
It is certainly genuine. Even in the absence of the Blakesely Effect opposite the clip, you should still be able to see some metal flow toward the clip. It is not always easy to see in a picture but I can see it virtually every time when looking at a coin through a loupe.
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Replies: 17 / Views: 2,643 |
Posted 03/07/2010 7:36 pm
