Errors and varieties of canadian coins
Canadian coins contains many errors and varieties. Sometimes, it increases the value of the coin with one of the type below. These errors and varieties are caused by several factors durant the production process. Through images and descriptions in the section, it allows you to identify and classify several types of errors and varieties.
1. Die Crack
Stamp of one or more cracks visible in relief on a coin struck by a die that has a crack more or less pronounced. The crack on the piece can be superficial (only the part chrome plated) or pronounced, demonstrating a certain depth.
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Example(s) de die crack
This is one of the categories of die cracks. For this categorie, the crack must reach the rim in two different places on the coin. A slope can be found on the field of the coin, but it's not always the case. To conclude that the broken part is retained, it must include a portion of the design and/or legend. Otherwise, it's a Cuds.
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Example(s) de retained broken die
4. Die Chip
Die chips are small pieces of metal in relief, and who are not part of the original drawing. Appearing most often in places where the pressure is stronger, for exemples the edge of letters, numbers and parts of the drawing where the space between the various elements of the design is fairly small.
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Example(s) de die chip
10. Die clash
Die clashes are marks on the dies by their clashing. Die clashes occurs when the press is active and that there are no blanks between them. After the clash, all coins minted with this same die will present these marks.
The marks correspond to the contour of the pattern and/or the legend on the other side of the coin. Because the dies are not always replaced at the same time, we do not find necessarily marks on both sides of the coin.
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Example(s) de die clash
The Harp error is represented by 5 lines of different lengths that start from the 1 of 1 cent and go down near the maple leaf. Only the second line reches the leaf and the others are not complete. This error exists only on the 1 cent 1962.
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Example(s) de harp
Plating process is the last step before the strike. Electrodeposition is a chemical process which leaves a very thin layer on the surface of a blank. It only takes a small error when cleaning blanks and it will appear on the coin struck. In 1944-45 blanks without the chrome plating were punched by mistake. Since the new plating process, there are more and more coins with this defect.
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Example(s) de deficient plating
23.2. Die Damage by Hub
This error is the result of accidental contact between the die unhardened and the hub. The marks leaved by this contact show parts of the drawing, which are more or less skewed compared to the original design, on the coin.
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Example(s) de die damage by hub
24. Rotated Die
This error can be caused by two reasons :
- One of the die was improperly aligned during the installation
- One of the die was too slack during the striking process and turned on its axis
There are regularly rotated coins in circulation. Pivoting movements of less than fifteen degrees are in the standards mint and have no added value.
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Example(s) de rotated die
Type #1: Without rimming
The blank coin without rimming is rarer than the type #2 (with rimming). The type #1 have no borders on the perimeter. Furthermore, its diameter is larger than the original.
Type #2: With rimming
On this type, the border is visible around the blank.
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