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 Replies: 15 / Views: 1,025 |
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Pillar of the Community
United States
6108 Posts |
Quick question of the half dollar folks. Got this 1968-D half with a nice-sized straight clip. Along the edge where the clip is there is a series of raised ridges, similar to reeding. I am unaware of how this is caused and asking if someone can explain them. Thanks! I am aware the coin is harshly cleaned, and a good example of how not to treat your error coins. 1968-D Kennedy half dollar mint error - Incomplete Planchet    |
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Bedrock of the Community
United States
94367 Posts |
Standing by, looks pretty cool to me.
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Pillar of the Community
United States
1143 Posts |
Posting so I can keep up with this and learn.
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Pillar of the Community
 United States
6489 Posts |
It the straight clip is along the edge of the sheet, then perhaps that is where the sheet was cut or fed into the rolling machine? Error Ref does say that straight clips can have different edge patterns: Quote:
The edge texture of a straight clip is highly variable. It can be smooth, rough, irregular, or serrated in some fashion. This probably reflects a variety of machines employed for the task — shears, saws, guillotines are three possibilities. https://www.error-ref.com/_straight_clips_/ |
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Bedrock of the Community
United States
73918 Posts |
Nice Straight Clip!  Errers and Varietys.
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Pillar of the Community
United States
8740 Posts |
tropicalbats, you know way more about coins than I probably ever will, and I know little about clips. That being said, I have wondered about many "clips" that have been posted on this site that have been given their validity because of the "Blakesley" effect. I have looked closely at several of these, and they could also be confused with being held in a vise, as opposed to being the "Blakesley" effect, at least in my opinion. Most here know much more than me, especially when it comes to errors. What do you think of that possibility?
-makecents-
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Pillar of the Community
 United States
6108 Posts |
Any time I see a cleaned error coin I start to think it's a fake. Just looking at the obverse of this one that effect could easily have just been someone filing down the rim before scouring the coin. But the reverse effect looks good to me, with raised pressure bumps where the valleys of the reeding are, although I am lacking in experience with the reeded coins. Most everything I do is with Lincoln cents and sometimes nickels.
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Moderator
 United States
95423 Posts |
If that is reeding on the clipped edge - it sure is a strange one. Could it be from the edge of the material that was rolled out? Also that is a Monster 'Blakesley effect' on it too. |
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Pillar of the Community
United States
6108 Posts |
It would almost have to be from the edge of the metal roll, but I'll looked at a lot of Lincoln Cent straight clips and it's usually just gooby metal on the edge, not a seemingly finished edge with ridges. |
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Pillar of the Community
United States
2734 Posts |
While I haven't seen a straight clip with this precise edge pattern, I would assume it was generated by the saw or guillotine that trimmed the strip.
Error coin writer and researcher.
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Pillar of the Community
United States
6108 Posts |
Interesting. I'm guessing the end of the roll is just where it sort of runs out of metal, but that the sides have to be cut to size so it fits the mahinery.
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Moderator
United States
95423 Posts |
yes, very interesting, thanks Mike!
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Pillar of the Community
United States
2734 Posts |
Tropicalbats, the ends of the roll are supposed to be trimmed, while the coin metal strip is split longitudinally into narrower strips that can be accommodated by the blanking press. So, most sides are trimmed at some point. However, sometimes this step appears to be neglected or sloppily performed, accounting for at least some ragged clips and "sawtooth" straight clips.
Error coin writer and researcher.
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Pillar of the Community
United States
4618 Posts |
Great error coin! Thanks for the lesson!
ANA ID: 3203813 - CONECA ID: N-5637 Clean a coin that may be worth collecting? Please DON'T! When in doubt, leave it dirty!! 
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Pillar of the Community
United States
6108 Posts |
Thanks all! It would be interesting to see what the trimming edge looked like, but that does seem to be the best possible answer here.
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Moderator
United States
188037 Posts |
Very nice! |
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Replies: 15 / Views: 1,025 |
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Posted 08/17/2024 9:08 pm
