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5 Cents 1962 Thin Or Foreign Planchet

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Errers and Varietys's Avatar
United States
63516 Posts
 Posted 08/19/2024  11:28 pm  Show Profile   Bookmark this reply Add Errers and Varietys to your friends list Get a Link to this Reply
Very cool, Zonad!
Errers and Varietys.
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jbuck's Avatar
United States
171047 Posts
 Posted 08/20/2024  09:09 am  Show Profile   Bookmark this reply Add jbuck to your friends list Get a Link to this Reply

Quote:
When you are very lucky you find both halves 38 years after they were struck!!
Outstanding!
Valued Member
Canada
232 Posts
 Posted 09/01/2024  07:32 am  Show Profile   Bookmark this reply Add SP67 to your friends list Get a Link to this Reply
I found an interesting paper about the Sherritt Company.

https://gosling.ca/Sherritt/Sherrit...Research.pdf

The document containing numerous papers and other materials about Sherritt's history. A lot of work.

I haven't had the time to read everything, but there's an interesting paper on page 42 about Canadian coinage based on the sintering process of nickel (metal powder compression).

Sherritt developed two concepts for the Royal Canadian Mint ( RCM): one based on power-rolled strip and the other on static compression of blanks. Initially, nickel planchets were produced by laminating ingots.

The nickel strip produced by the pilot plant was retained, but the actual setup produced too thin metal sheets. Therefore, they had to overlap and compress two strips together to achieve the desired characteristics as per RCM requirements. Unfortunately, this method produced blanks that sometimes delaminated. This problem was resolved with the formal manufacturing plant.

All this work was carried out in the early 1960s. Sherritt produced some demos in 1961 and secured the contract from the RCM in 1962.

So, I think this explains why we only find split versions of the Nickel for 1962. Early deliveries in 1961-62 were based on the pilot plant with the laminated two-sheet method. Subsequent deliveries were made from the formal plant without this issue."




Edited by SP67
09/01/2024 09:15 am
Valued Member
Canada
67 Posts
 Posted 09/02/2024  3:02 pm  Show Profile   Bookmark this reply Add Hunter to your friends list Get a Link to this Reply

Quote:
When you are very lucky you find both halves 38 years after they were struck!!


Zonad how do you know both of those halves fit together?

Do you have a picture of the two halves together, that's something I'd like to see?
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jbuck's Avatar
United States
171047 Posts
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