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Rolling Stock Or Strip Error?

 
 
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 Posted 03/15/2019  8:04 pm Show Profile   Check SPP-Ottawa's eBay Listings Bookmark this topic Add SPP-Ottawa to your friends list Get a Link to this Message
This is a business strike 1973 nickel dollar. At first I through this was heavy rolling marks, but unlike every other nickel dollar that has rolling marks, this is only on the one side. So that would also rule out poorly annealed nickel strips too...

This one is a new one for me (at least with Canadian coins). This is definitely in the planchet, prior to the strike (and not post-mint damage), as it tends to almost disappear in the raised devices.

Something on the strip during the rolling of the nickel strips?




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 Posted 03/15/2019  11:02 pm  Show Profile   Check GrapeCollects's eBay Listings Bookmark this reply Add GrapeCollects to your friends list Get a Link to this Reply
Raised or incuse?
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 Posted 03/15/2019  11:28 pm  Show Profile   Bookmark this reply Add Altaira to your friends list Get a Link to this Reply
SPP, I have two nickel dollars that exhibit similar incused lines on one side only, although to a much lesser degree. You made me take a closer look. The first one I had brushed off as interesting PMD at the time, but now I have the same question. These are on two different coins, the first is on a 1975 and the second a 1974.




I can't get good enough close up pictures right now, I'll edit this post tomorrow when I do.

Edit:




Seems rather extreme to be rolling marks.
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Edited by Altaira
03/16/2019 9:00 pm
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 Posted 03/16/2019  06:31 am  Show Profile   Bookmark this reply Add Phil310 to your friends list Get a Link to this Reply
Couldn't the rolls put marks on one side of the strip if only the upper or lower roller was damaged ?
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 Posted 03/16/2019  07:43 am  Show Profile   Check colonialjohn's eBay Listings Bookmark this reply Add colonialjohn to your friends list Get a Link to this Reply
I have an 1817 Mexican War of Independence Re-strike coin with this same effect. Looks like on my example a lamination band but the interior of the band has these raised lines under a stereo microscope review at 40X. Could be a die defect which then this area was then polished creating this effect? In your case these is no discrete bands? but just raised lines from an improper polished die? Remembering an incuse area of the die will CREATE a raised line on the coin. I know Mike Diamond had no identifying mint error definition for this on his Yahoo Channel ... I have been following this outcome.

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 Posted 03/16/2019  11:10 am  Show Profile   Check SPP-Ottawa's eBay Listings Bookmark this reply Add SPP-Ottawa to your friends list Get a Link to this Reply
Mike Diamond suggested that the planchet was badly scratched, before the strike...

Personally, I think the planchet was flawed, because there are minor laminations if you look close enough...
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 Posted 03/16/2019  12:19 pm  Show Profile   Bookmark this reply Add okiecoiner to your friends list Get a Link to this Reply
When going through the "what ifs", I thought that either the belt or the roller stopped ... one moving and one not as the strip went though, scratching one surface as it moved along. Every planchet cut from that strip or strips would have one side scratched or damaged. I'm just guessing/pondering.
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