Double Clip Blank Dime Planchet w/ Reeding

Upon further examination of this blank planchet I noticed light reeding inside the clipped areas.
Only theory I can come up with is based on something I read in Mike Diamond’s article on an unexpected source for reeding - “false reeding, produced by edge-to-edge contact when a newly-struck dime is rolled and squeezed against an unstruck planchet.“. However, I don’t quite understand how/when this happens if the coins drop out of the press into a bin immediately after strike. Could someone explain?

Any other possible explanations for the reeding?




Tagging @JCro57

 

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I don't think it started out as a clipped planchet. Your coin looks like it has an extra layer of metal around the clipped areas. Is it silver?

 

I do not believe it’s silver. The two coins in the last pic are silver and there is a significant contrast (in person more than photos). The edges resemble a non-silver coin. Also doesn’t sound like it at all.
Weight is 2.0g.

 

It is easier to post a video than explain it. It was probably a press similar to this one. Notice all the moving parts to feed the planchet into the coining area? How there has to be an attendant right there to watch the process? Because the coins jam up in the coining chamber. There is hundreds of tons of pressure smashing the ever living out of the planchet. Bad things happen to misplaced planchets.

 

Whatever caused this I don't know. From your photos it looks like the same composition of a plated dime. I just find it hard to understand how another dime would hit in the clipped area with enough pressure to cause reeding that deep. Maybe more experienced members can explain this.

 

What areas are you seeing a plating look? I’ve been studying and comparing original/replated steelies lately and didn’t initially see any of that here.

Possibly just a single clip that was able to line up and the other ‘clip’ is only an impression from another coin appearing as a clip??
I’d wonder if that’s what both sides are but it seems a little light to have no clips.

 

First of all, by examining the edge it obviously is not silver.

I do not believe this coin left the Mint like that and was altered.

Reeding is only applied during the die strike, and would certainly not have it inside the clipped area. The idea a struck coin with reeding left those marks is not logical with how the reeding appears on it and is not a case of "false reeding." Plus the surface pattern on both sides is suspect, and the rim is unnaturally shaped. Looks ground or filed down with a machine.

This clad planchet is 100% altered.

 

@This_is_wes IMO I see a plating issue from the photos showing the edge in photos 3, 4, 5, 6, and 7. You can see the copper core with the plating above and below the core. Clad dimes are composed of an "outer layers of copper-nickel (.750 copper, .250 nickel) bonded to a core of pure copper". (Red Book). I believe that when you are comparing original/replated steelies you are referring to the 1943 Lincoln cents. Please correct me if I'm wrong.

 

I’m having a hard time seeing the difference. Including more photos.
Layers appear the same as other dimes. What I see is a thin copper/nickel layer, copper core, and another thicker copper/nickel layer. The thicker outer layer is overlapping the core in the clipped area. I believe this is due to whatever force transferred the marking.

Comparing the reeding to a regular strike I see broad valleys and narrow ridges, as false reeding is described. If false reeding is possible by a newly-struck dime rolling and squeezing against an unstruck planchet, then wouldn’t this be possible? If not what does actual false reeding look like? I haven’t been able to find any examples.

Also, found a raised button while inspecting further. Looks similar to those found on the reverse of regular strikes. The location doesn’t seem to help much though.

 

I suspect that the reeding on the inside of the clipped edge is the result of a strike clip. Your blank was inserted off-center beneath a newly struck dime that had possibly adhered to the hammer die. The dime was forced through your blank during the hammer die's next downstroke. The shearing action was facilitated by a stiff collar frozen in the "up" position. The non-reeded clip may also be a strike clip, but in this case another blank or planchet was forced through your blank. The distance between the two clips suggests that your blank straddled the gap between two adjacent striking chambers and that this is a tandem (saddle) strike clip. Very neat, if my reconstruction of events is accurate. I'd like to write it up for Coin World, if possible.

 

Awesome explanation. I couldn’t really find much on how dimes are struck. Only illustrations available show one coin at a time but this makes much more sense.

I’d be happy to send it to you. Let me know how. Thanks.

 

Well, I guess I stand corrected!

 

@mikediamond

Is this what you mean by false reeding? It is from a cud I own.

 

These vertical striations don't really qualify as false reeding. These may have been generated as the coin was being ejected from a poorly machined or badly worn collar. If so, it would be ejection damage. However, it could also have occurred outside the mint in a coin-sorting / coin counting machine. Could you provide images of both faces, as it seems this part of the edge might be bulging out a bit.

 

The lines match up perfectly to the missing details on the reverse

 

Your nickel has a cud (corner die break) on the obverse. It's not clear to me why the edge might have been vulnerable to damage here, as the presence of the cud should cause less radial expansion during the strike and therefore no bulge. It's possible that the cud was knocked off when a temporarily misaligned hammer (obverse) die collided with the top of the collar, an event that also damaged the working face of the collar. This ordinarily shouldn't happen, as the collar is much harder than the dies. Perhaps the die was abnormally hard, which might account for its brittle response to the collision. Or perhaps some fine debris from the site of the break lodged between the die neck and the collar, scouring the latter with fine striations. This might be worth a write-up in Coin World, as we might be looking at the first case of "reverse collar clash".

 

If you would like me to mail it to you to examine in person, send me a private message. Thanks, Mike!

 

I'm confused! How do you account for the raised arc on the blank that looks like a portion of the rim?

Chris

 

This might be a collar scar. I'll know more when I examine the specimen.

 

I now have Wes' double-clipped planchet. I am now less certain that these are strike clips. There's no suggestion of a saddle or any typical signs of the horizontal compressive stress that the unstruck portion of a saddle strike experiences. What I thought might be collar scars appear on the upper side of the planchet. They may instead be sharply defined pressure ridges. The lower side of the planchet also shows unexpected features, none of which resemble collar scars. The surface next to the larger "clip" has a very rough, almost blistered appearance. Medial to both clips is a concave surface that ends in a sharp boundary. I am no longer sure that these concave notches were generated in a striking chamber. But my studies will continue. I need to measure the distance between strikes on a dime saddle strike to see if it matches the distance between these two concave notches. Stay tuned, this may take awhile...