Author Topic: Manzhouguo fibercoinage 1944-1945  (Read 10006 times)

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Offline weepio

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Manzhouguo fibercoinage 1944-1945
« on: January 11, 2012, 04:39:04 PM »
This is a part of my Manzhouguo coins. The brown coins are more brown in real than on the scan.

Offline Figleaf

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #1 on: January 11, 2012, 05:51:57 PM »
Impressive, weepio. I bet you got some more similar pieces...

Those colour differences are going to be debatable, I think. If something is coloured by pigmentation, its colour can be changed chemically. I have a small but very nice collection of British transport tokens. Some have a "bleached" look. Maybe they got stuck in clothes that were being washed. The colour is clearly different, without even trying. What if people do start trying?

Similarly, if the coin is supposed to be dark red and is brown instead, what is that? A production error? An unavoidable result of the techniques used? A consciously made decision to create another type? Maybe we can ask a stamp collector.

On another tack, I wonder why we don't have more artificial fiber coins. In the days of these coins, they broke too easily, but I know there are fibers with a strength similar to steel these days. You'd expect they would be cheaper, though maybe not when oil is at @ $150/barrel. Any chemical engineers out there? ;)

Peter
An unidentified coin is a piece of metal. An identified coin is a piece of history.

Offline gxseries

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #2 on: January 12, 2012, 11:56:00 AM »
Here are my examples:








Offline Figleaf

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #3 on: January 12, 2012, 01:43:57 PM »
This is super, gentlemen. Don't stop here. We want to see more threads like this.

Peter
An unidentified coin is a piece of metal. An identified coin is a piece of history.

Offline weepio

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #4 on: January 12, 2012, 03:50:38 PM »
I just love the color of your 1944 5 fen coin

Offline bart

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #5 on: January 12, 2012, 07:59:38 PM »
These are my fiber coins. They are all three Kang de 12 (1945)

There is a 5 fen red fiber, a 1 fen red fiber and a 1 fen brown fiber.

translateltd

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #6 on: January 14, 2012, 08:39:29 AM »
Here are my 6 fen worth:

« Last Edit: January 14, 2012, 11:58:36 AM by translateltd »

Offline FosseWay

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #7 on: January 14, 2012, 10:35:41 AM »
The only coins I have that vaguely fall into this bracket are the penny and halfpenny of the British Armed Forces series, which are made of a kind of laminated, compressed cardboard called CP3 IIRC. Unfortunately they're printed with black text on a very dark brown background and don't scan well.

Offline Coinsforever

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #8 on: January 14, 2012, 10:59:27 AM »
Marvelous show !

Cheers ;D
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http://knowledge-numismatics.blogspot.in/

Offline Figleaf

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #9 on: January 14, 2012, 01:17:23 PM »
made of a kind of laminated, compressed cardboard called CP3 IIRC.

Trust the army to come up with a catchy name. The Manchukuo coins have a very different feel. More like buttons. The BAF tokens feel more like packaging material.

Peter
An unidentified coin is a piece of metal. An identified coin is a piece of history.

Offline gxseries

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #10 on: January 24, 2012, 12:49:09 PM »
The only thing that it reminds me that's similar is the Japanese 1945 1 sen coin that's made from "porcelain".

I would most interested to know what the Chinese "fiber" coins are made of. The Japanese coins are known to be made of a certain mineral which I can't remember off my head...

Offline Figleaf

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #11 on: January 24, 2012, 03:55:31 PM »
Cellulose based or nylon artificial fibre seem the most likely candidates for that point in time.

Peter
An unidentified coin is a piece of metal. An identified coin is a piece of history.

Offline Chinasmith

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #12 on: January 08, 2013, 11:59:36 AM »
The Manchukuo fiber coins are believed to be made of a clay which contains or to which is added magnesium. It has been called "magnasite" but I don't know if that is correct. Perhaps some of the technical experts over at the Xeno site could help.  www.zeno.ru   The Zeno Oriental Database. Free to visit; must register to post comments. No charge.
Researcher on coins, paper money and tokens of China.

Offline plasticman

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #13 on: January 04, 2015, 05:30:58 PM »
Chinasmith suggested that the Manchukuo coins were based on a clay plus magnesium mixture called Magnasite. There is a flooring material commonly used in the 1920s-1950s based on burnt or calcined magnesium carbonate ( Magnesite ) mixed with magnesium chloride and fillers which might include fibrous material. It was typically reddish brown in colour and might seem to be a candidate for the coins but it is electrically conductive even when dry and these coins don't seem to be conductive.

Offline Figleaf

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Re: Manzhouguo fibercoinage 1944-1945
« Reply #14 on: January 04, 2015, 07:23:59 PM »
That seems to disqualify the magnasite solution...

Peter
An unidentified coin is a piece of metal. An identified coin is a piece of history.