Author Topic: Copper  (Read 317 times)

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Offline Treverer

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Copper
« on: September 04, 2020, 10:39:44 AM »
Greetings to all. I ask for your help to identify this copper coin. Thanks in advance.
20,35 grams
20,5 mm diameter
9 mm thickness

Offline Seeker55

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Re: Copper
« Reply #1 on: September 10, 2020, 06:19:11 PM »
The weight, diameter, and general appearance suggest an Indian Mughal copper dam, possibly of Akbar or Jahangir, but I can't be more specific than that.

Offline Treverer

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Re: Copper
« Reply #2 on: September 10, 2020, 10:45:25 PM »
Thank you Seeker55 for the helpful hint, which is very likely to apply. The condition and legibility of the coin are indeed not the best.

Offline Treverer

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Re: Copper
« Reply #3 on: September 14, 2020, 10:07:01 PM »
Most likely this is the copper dam of Jahangir AH 1014-37 from the Bairata Mint - KM#126.3

Offline Figleaf

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Re: Copper
« Reply #4 on: September 15, 2020, 10:56:20 AM »
Thanks for getting back to us. Are you planning to take off the green stuff?

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

Offline Treverer

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Re: Copper
« Reply #5 on: September 16, 2020, 11:17:22 AM »
I'm afraid to destroy the patina  :-\

Offline asm

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Re: Copper
« Reply #6 on: September 17, 2020, 07:43:39 AM »
You have a bad choice. Either risk removing the patina (which is likely to come back) or risk loosing the coin and many others with it.

Jahangir Bairata mint coin is a very common coin and I would suggest you throw this coin out since the bronze disease is likely to reappear sooner than later and it will take a toll on the nearby coins.

Amit

"It Is Better To Light A Candle Than To Curse The Darkness"

Offline Treverer

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Re: Copper
« Reply #7 on: September 20, 2020, 01:55:26 PM »
Hi Amit, thank you for your good advice, which I will follow.  :'(

Offline Seeker55

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Re: Copper
« Reply #8 on: September 25, 2020, 02:22:32 AM »
Personally, I would not throw it out. To remove the green material, you could soak in sodium sesquicarbonate solution with occasional brushing.

Here's an article with steps to address bronze disease.

https://www.forumancientcoins.com/n...ze%20Disease

The solution of mixed sodium carbonate (washing soda) with sodium bicarbonate (baking soda) in distilled water is easy and inexpensive to make and is a helpful soak to remove green corrosion and stop its progress. The soaking can be done for a few days at room temperature instead of the hot water method described. This may or may not remove the patina.

Formula for sodium sesquicarbonate solution:
10.6 g of sodium carbonate (washing soda) and 8.4 g of sodium bicarbonate (baking soda) dissolved in 100 ml of distilled water

Offline Treverer

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Re: Copper
« Reply #9 on: September 25, 2020, 07:44:33 AM »
Thanks Seeker 55. I'm about to try. Result still open. :-\