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1971-D LMC Pre Strike Planchet Error Or Debris Obstructed Strike?

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Pillar of the Community
United States
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 Posted 12/11/2021  11:42 am  Show Profile   Bookmark this reply Add sheldius to your friends list Get a Link to this Reply
Very interesting. Is the area at the one just weak or can you see that it is bending at all. Could be a strike through.
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Coindom76's Avatar
United States
205 Posts
 Posted 12/11/2021  1:52 pm  Show Profile   Bookmark this reply Add Coindom76 to your friends list Get a Link to this Reply
@coop There is no bend in this LMC. There is striking on the rim in the area though. It can be seen when the reverse is facing upward. See attached pic

@Spence I have attached a few close up pics of the affected area.

@Chase I have attached a rotated pic.

Some debris or foreign item must have obstructed the striking process because there are no roll overs, twists, knicks or damage to the rim or coating.
I believe stuck through.

Any thoughts or information the community would like to share is as always appreciated.
Thanks,
Coindom76


1971-D-LMC--Pre-Strike-Planchet--Error-Or-Debris-Obstructed-Strike?
1971-D-LMC--Pre-Strike-Planchet--Error-Or-Debris-Obstructed-Strike?
1971-D-LMC--Pre-Strike-Planchet--Error-Or-Debris-Obstructed-Strike?
1971-D-LMC--Pre-Strike-Planchet--Error-Or-Debris-Obstructed-Strike?
1971-D-LMC--Pre-Strike-Planchet--Error-Or-Debris-Obstructed-Strike?
Edited by Coindom76
12/11/2021 1:54 pm
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Canada
3328 Posts
 Posted 12/11/2021  2:23 pm  Show Profile   Bookmark this reply Add Wrekkdd to your friends list Get a Link to this Reply
Definitely look struck through something to me. Since the rim is effected does that mean what ever it was struck through was inside the striking chamber but also outside the chamber?
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Coindom76's Avatar
United States
205 Posts
 Posted 12/11/2021  2:37 pm  Show Profile   Bookmark this reply Add Coindom76 to your friends list Get a Link to this Reply
@wrekkdd I would like the answer to that question too. The collar is thinned out in that area . Something effected the obverse, rim and collar on obverse in that area as well as the reverse weak strike to that area. Another question is could something obstructing the strike cause issues throughout the coin in regards to the strike?
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Cujohn's Avatar
United States
7174 Posts
 Posted 12/11/2021  3:02 pm  Show Profile   Bookmark this reply Add Cujohn to your friends list Get a Link to this Reply
I think the piece was missing before the strike. Why would it effect the reverse if it was a strike through? That area was missing at the strike. That's why the reverse is week. And if it was a strike through, the ONE would have been struck up full, and the reverse area on STAT would have filled in. Might have been a little heavy to begin with.
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Coindom76's Avatar
United States
205 Posts
 Posted 12/11/2021  3:12 pm  Show Profile   Bookmark this reply Add Coindom76 to your friends list Get a Link to this Reply
@Cujohn That doesn't explain the effected rim and collar though.
The coin seems to have left the mint in this manner so it is either struck through or a planchet error.

Edited by Coindom76
12/11/2021 3:19 pm
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Canada
3328 Posts
 Posted 12/11/2021  3:30 pm  Show Profile   Bookmark this reply Add Wrekkdd to your friends list Get a Link to this Reply
I imagine if the Planchette was already like this then when during the striking process metal from the coin would be pushed inwards towards the crater, so there would be an edge around the edges of the error. If it was struck through, all the metal would have been pushed into the coin, in tern it would have a straight edging with no metal pushed outwards to the center of the error, or smoothed edges depending what was struck through. I'm sure there is a much better way to differentiate the two errors though. It looks like a partial rim on the inside of the error which I don't think would be there with a damaged planchette, it could go either way still.
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coop's Avatar
United States
62064 Posts
 Posted 12/11/2021  3:43 pm  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
Well it don't show a wave where the metal is pushed in a different direction. It maybe have been a planchet issue. The weakness on the 'N' on one would be there because of the lack of stability from the opposite side. I feel this is an planchet issue. Unique find.
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Coindom76's Avatar
United States
205 Posts
 Posted 12/11/2021  4:07 pm  Show Profile   Bookmark this reply Add Coindom76 to your friends list Get a Link to this Reply
My question is where would I go about having it confirmed if it can't be confidently confirmed here?
The collar and rim is affected on both obverse and reverse. Wouldn't they be unaffected if it was a planchet error?
Thank you for the feedback from the community.
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John1's Avatar
United States
56855 Posts
 Posted 12/11/2021  4:30 pm  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
PM Mike. If the piece was missing before strike wouldn't it weight less than 3.1?
John1
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Petespockets55's Avatar
United States
5780 Posts
 Posted 12/12/2021  1:04 pm  Show Profile   Bookmark this reply Add Petespockets55 to your friends list Get a Link to this Reply
I'm with dearborn and Cujohn.

IMHO, this is a planchet issue where the metal was missing before the strike.

The rim on each side of the missing area is weak and tapers towards the void. This leads me to believe it was missing before it was sent to the upturning process for the proto-rim.

Also, the weakness to ONE is consistent with missing metal prior to being struck. Just like the area opposite a Cud is weak when there is no die to force the metal into all devices of the opposite die.

As for the weight being within tolerances, it may have been a slightly rolled thick planchet. Add to that, the scale may be rounding up. If there is a way to set the scale to weigh the coin to .01 tolerance, that may give us more info to give a more detailed answer on the weight.

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Cujohn's Avatar
United States
7174 Posts
 Posted 12/12/2021  3:30 pm  Show Profile   Bookmark this reply Add Cujohn to your friends list Get a Link to this Reply
The rim and collar are affected because the piece is missing at the strike. Not enough copper to fill in the void. If it was something extra on the planchet, [strike through] there would be too much material in between the dies. Then the devices would fill in more than normal.
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merclover's Avatar
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10635 Posts
 Posted 12/12/2021  3:40 pm  Show Profile   Bookmark this reply Add merclover to your friends list Get a Link to this Reply
I'm with John1 on this... wouldn't this weigh less than 3.1 if the metal was missing from a damaged planchet?
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 Posted 12/12/2021  4:10 pm  Show Profile   Bookmark this reply Add Wrekkdd to your friends list Get a Link to this Reply
I have never seen a struck through that was inside and outside the striking chamber, but since the working die strikes the planchette in a collar to imprint the obverse, if there was something between the die and the collar it could also cause a weakness on the reverse depending on how hard the object was. I imagine this would also cause damage to the collar itself. Due to weight and the fact the weakness on the reverse could have been caused by the struck through I'm not 100% sure how to tell the difference. This is why I mentioned the flow of metal inward or not on the area of interest. If the chunk was missing pre strike the metal would flow inward to the center of the error, a struck through would not.

Edit:I guess a simplified explanation in this situation would be, if a strike through happens metal would not be displaced, if a damaged planchette was struck with this sort of issue metal would be displaced inwards on the creator due to striking pressure pushing the metal inwards because it's the easiest way for the metal to move under pressure with a large void to fill.
Edited by Wrekkdd
12/12/2021 4:19 pm
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John1's Avatar
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56855 Posts
 Posted 12/12/2021  5:32 pm  Show Profile   Bookmark this reply Add John1 to your friends list Get a Link to this Reply
Time to PM Mike.
John1
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