Error Other | Zinc core disturbance "transferred" through the copper plating?

[Petespockets55]

Found this in a roll of 2014.
The area in question is rim to rim running above and parallel to VDB.
It appears to be a disturbance beneath the copper plating. There are 2 or 3 linear depressions (left side) and a raised area (far right side) that are under the copper plating as well as the "line" connecting them.
I'm not sure how the zinc core is manufactured and hope someone here has some knowledge on the zinc core manufacturing process they can share.
Is the zinc cold-formed with rollers or poured in a molten state and then rolled or scraped to the proper thickness?

I welcome all comments and thanks for looking. Cliff

[jfines69]

Best I can tell is PSD??? Pics are a little to blurry for me!!!

[VAB2013]

The shiny Shield is making your photos difficult to see Cliff, sorry It's my understanding that the Ball Jar Lid company somewhere in TN started supplying the blanks to the mint, I think it was back in 1982 so that would be the copper plated zinc planchets. No idea how the blanks are made but it starts with a zinc core and then I think the copper is electroplated. I always thought zinc was blue when it shows through a zincoln.

[Petespockets55]

Thanks for looking.
Definitely not PSD but it was difficult to get images to show the incuse and linear areas and eliminate the shine.

Neat about the Ball manufacturing Co. and I'm not sure what I was thinking previously about the zinc being dull grey. Of course you're right about it being silvery blue. But it makes sense that the copper plating will follow the contour of whatever the copper is covering.

[VAB2013]

Cliff could it be die damage like a die dent or something?

[jfines69]

Zinc can become a dull grey depending on what has contaminated it... Salt water will make it dull grey rather quick... It may be a combination of contamination between the core and plating, a struck thru and PSD... There appears to be some damage to the rim/edge on the west end???

[Petespockets55]

Zinc can become a dull grey depending on what has contaminated it... Salt water will make it dull grey rather quick... It may be a combination of contamination between the core and plating, a struck thru and PSD... There appears to be some damage to the rim/edge on the west end???

This is a big part of why I think it is in the zinc core. It continues around the rim, just like a loosely compacted solid copper lamination would. The copper plating would then attach to and follow the contour of the substrate.
Jim, Would it be ok to send to you for examination and imaging?

[jfines69]

This is a big part of why I think it is in the zinc core. It continues around the rim, just like a loosely compacted solid copper lamination would. The copper plating would then attach to and follow the contour of the substrate.
Jim, Would it be ok to send to you for examination and imaging?

Send it my way... You still have my address???

[Petespockets55]

Send it my way... You still have my address???

Sure do. Thanks.

[Petespockets55]

On it's way Jim.
I forgot to get images of the edge of the coin before sending it to you.
The left edge of the linear anomaly goes past the rim and appears to have a crease or fold over on the edge of the coin. It doesn't appear to be PSD.
Cliff

[jfines69]

A couple of months ago some one posted a coin (Larry I think) with a plating anomaly and I can not remember what Mike Diamond said it was??? I will try to find the thread a little later... Thanks for letting me take a look at your coin... I appreciate it!!!

[stoneman227]

Jim , was it this one .

http://www.lincolncentforum.com/forum/showthread.php?41606-1992-D-spider-web-a-day-late&highlight=Spider

John

[jfines69]

Jim , was it this one .

http://www.lincolncentforum.com/forum/showthread.php?41606-1992-D-spider-web-a-day-late&highlight=Spider

John

I believe that is it John... Thanks... It looks like it is your coin with the split plating!!!

[jfines69]

I got the pics of this coin finished... To me it looks like it may have been a thin linear blister, running across the coin, that took a couple of hits and split open... The area along the bottom of the shoulder (red arrows) between the VDB and split is concave... Hopefully the 3D pic shows the concave area better than the flat pics??? Toward the east end (yellow arrow) it is flattened out and just north of the split in the field is a fairly deep gouge... There are lots of lines all over the obv and rev... I am not sure if those are from the rollers that rolled out the zinc or contamination under the plating creating blisters as some do look to be blisters... Hope that helps a little!!!

[Petespockets55]

Super images Jim. Lots of detail I couldn't begin to capture.
Any chance you got any images of the third side (edge) of the coin where it wraps around the left edge? The area that looked like it was folded/creased?

I see what you mean about possible contaminant causing the plating to peel away on the right side. Do you think the metal bump remaining in that area on the rim, is a blister?

Thanks again for putting so much time into this one. Cliff