Author Topic: Circular coins that have an inner polygonal rim  (Read 17990 times)

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Offline <k>

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Circular coins that have an inner polygonal rim
« on: May 31, 2011, 06:04:48 PM »
The first coin I noticed with an inner polygonal rim was the French two francs coin, which was introduced in 1979.
« Last Edit: March 20, 2019, 03:32:27 PM by <k> »

Offline <k>

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Re: Circular coins that have an inner polygonal rim
« Reply #1 on: May 31, 2011, 06:10:23 PM »
In recent years, some countries have been replacing their polygonal coins with round coins that have an inner polygonal rim. Fiji is a good example. Some say that this is because vending machines have difficulty with polygonal coins. However, I don't believe that. Here in the UK, vending machines always accept my 20p and 50p coins without any problem.





 
« Last Edit: March 20, 2019, 04:28:01 PM by <k> »

Offline Bimat

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Circular coins that have an inner polygonal rim
« Reply #2 on: May 31, 2011, 06:12:25 PM »
Bahrain 500 Fils.



Aditya
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Offline <k>

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Re: Circular coins that have an inner polygonal rim
« Reply #3 on: May 31, 2011, 06:13:15 PM »
The East Caribbean States joined the trend around 2002.
« Last Edit: March 20, 2019, 03:40:27 PM by <k> »

Offline Abhay

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Re: Circular coins that have an inner polygonal rim
« Reply #4 on: May 31, 2011, 06:14:26 PM »
Indian 1 and 2 rupee coins fit this category. While 1 rupee coin has 7 sided polygon, the 2 rupee coin has 11 sided polygon.

Abhay
« Last Edit: May 08, 2012, 02:35:19 PM by coffeetime »
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Offline <k>

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Re: Circular coins that have an inner polygonal rim
« Reply #5 on: May 31, 2011, 06:26:22 PM »
The Susan B Anthony dollar is another example from the 1970s.

Offline Bimat

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Circular coins that have an inner polygonal rim
« Reply #6 on: May 31, 2011, 06:29:46 PM »
Nice one, Aditya - a bimetallic version of an inner polygonal rim. I wonder if it's unique?
This NLT from Cabinda commemorates 35th anniversary of Cabinda's independence. Interesting thing is that only obverse has a polygonal rim! I'm sure they must have spent a lot of money for its production. ::)



Aditya
It is our choices...that show what we truly are, far more than our abilities. -J. K. Rowling.

Offline Abhay

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Re: Circular coins that have an inner polygonal rim
« Reply #7 on: May 31, 2011, 06:33:22 PM »
So India issued these a bit earlier than the South African ones. An early adopter, then.  8)

The 1 rupee coin was first issued in 1983 while the 2 rupee coin was issued in 1982.

Abhay
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Offline <k>

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Re: Circular coins that have an inner polygonal rim
« Reply #8 on: May 31, 2011, 06:34:40 PM »
The 1 rupee coin was first issued in 1983 while the 2 rupee coin was issued in 1982.

Abhay

So that's not long after France, then. I wonder what is the earliest one we will find for any country?

Offline Abhay

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Re: Circular coins that have an inner polygonal rim
« Reply #9 on: May 31, 2011, 06:39:40 PM »
So that's not long after France, then. I wonder what is the earliest one we will find for any country?

I think it has to be India. The coins issued by Shah Jahan (1628-1658 AD) had a square border.

Abhay
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Offline Bimat

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Circular coins that have an inner polygonal rim
« Reply #10 on: May 31, 2011, 06:40:58 PM »
Nice one, Aditya - a bimetallic version of an inner polygonal rim. I wonder if it's unique?
Found another legal tender: Taiwan 20 Dollars



Aditya
It is our choices...that show what we truly are, far more than our abilities. -J. K. Rowling.

Offline chrisild

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Re: Circular coins that have an inner polygonal rim
« Reply #11 on: May 31, 2011, 06:44:32 PM »
You may have seen the 5 DM "Magnimat" coin that replaced the earlier silver piece here in 1975 ...

Christian
« Last Edit: October 21, 2012, 10:26:27 AM by chrisild »

Offline chrisild

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Re: Circular coins that have an inner polygonal rim
« Reply #12 on: May 31, 2011, 06:46:08 PM »
Now why does that belong here? Well, it doesn't. But Wolfgang Doehm's original design (image from the Jaeger catalog) sure looked a little different. That "had to be modified" then for technical reasons. ::)

Christian

Offline Bimat

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Circular coins that have an inner polygonal rim
« Reply #13 on: May 31, 2011, 07:05:48 PM »
Latest issue from Peru:



Aditya
It is our choices...that show what we truly are, far more than our abilities. -J. K. Rowling.

Offline <k>

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Re: Circular coins that have an inner polygonal rim
« Reply #14 on: May 31, 2011, 07:55:08 PM »








In the 1990s Malta went in the opposite direction, and gave an inner polygonal rim to two coins that had previously been round. Presumably this would have made them easier to distinguish from the other coins in the series.

 
« Last Edit: March 20, 2019, 04:30:44 PM by <k> »