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#1

Nugget
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Joined: 27 November 2012
Posts: 5,999
Member
13 March 2013 03:33 pm

An effective method for cleaning Silver Coins is to get yourself a box of Bi-Card Soda (Baking Soda), adding a very small amount of water to about a tablespoon of the Bi-Carb make a thick paste and lightly rub the paste over the coin until you are happy with the results, repeat as necessary. This method doesn't visibly scratch the coin but as always you consider as to whether or not cleaning the coin will de-value it, I wouldn't recommend cleaning a key date coin for example.

Below is a coin I recently cleaned using the Bi-Carb method, it only took about 2-3 minutes to clean.

Before
1363149015_20130309_131503_resized.jpg

After
1363149036_20130313_150955_resized.jpg


Current setup: Garrett ACE 400i, Garrett Pro-Pointer AT, Lesche Digging Tool.
Previously owned / used: Minelab GPX 4500, Garrett AT Gold, Garrett ACE 250.

6 users like this post: WalnLiz, Robbo, AngerManagement, Monty, numpty, Rockhound

#2

kemjak57
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Joined: 25 February 2013
Posts: 868
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13 March 2013 07:34 pm

Thanks Nugget I used your method on the stuff I posted the other day and mostly they turned out great and like you say they take no time to clean. Cheers Rick


True friends are like gold, precious and hard to find. Treasure them when you have them.

#3

Dughug
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Joined: 27 January 2013
Posts: 251
Member
23 March 2013 08:54 pm

G'day all,

bi-carb soda works great

Try the following method - The missus uses it for all her silverware - it works extremely well on those hard to get into crevices in jewellery without needing to remove & reset the stone if you want a really good clean. Also all those tarnished silver mugs etc.

"to clean silver line the bottom of a saucepan with aluminium foil (or use an aluminium saucepan) and warm 500 ml water with 2 teaspoons of bicarbonate of soda. Immerse your jewellery thoroughly (or whatever silver item you want to clean) leave for several minutes then rince well & dry."

Voila all clean.  Its a fanbloodytastic method - no rubbing or scratches give it a go!

1 user likes this post: josmarc999

#4

pulltab magnet
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Joined: 16 November 2013
Posts: 37
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17 November 2013 10:27 pm

will this method work on other metals, old bullets & buttons ect.

#5

Nugget
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Joined: 27 November 2012
Posts: 5,999
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17 November 2013 10:34 pm

I have tried the Bi-Carb method on an old Penny but it seems to dry the coin out more than anything. For Copper, try warm soapy water and soft brush then soak in Olive oil for a few days. Personally, I don't bother cleaning Copper coins anymore as the results (for me) have been rather disappointing and not worth the effort.


Current setup: Garrett ACE 400i, Garrett Pro-Pointer AT, Lesche Digging Tool.
Previously owned / used: Minelab GPX 4500, Garrett AT Gold, Garrett ACE 250.

#6

Danmuss
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From: Sydney, NSW
Joined: 28 February 2014
Posts: 299
Member
23 March 2014 10:41 pm

Well guys I took your advice on cleaning Stering silver in Foil with carb soda and what a result, took a few times baking in the water but cleaned up good big_smile

1395577988_image.jpg
1395574880_image.jpg

Last edited by Danmuss (23 March 2014 11:33 pm)

2 users like this post: Monty, Chuky boy

#7

Paulmarr
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From: Adelaide, SA
Joined: 05 November 2013
Posts: 845
Member
23 March 2014 10:57 pm

I love that bracelet!  Did you ever get the weight measured?


Team Bogan member - GOLD BABY!

#8

Danmuss
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From: Sydney, NSW
Joined: 28 February 2014
Posts: 299
Member
23 March 2014 11:17 pm

Paulmarr wrote:

I love that bracelet!  Did you ever get the weight measured?

Yeh I posted the weight a while ago, Yeh mate such a cool find, took a lot of cleaning tho cause its been in the ground for a long time me thinks..

https://www.prospectingaustralia.com.au … d=5148&p=2

#9

Paulmarr
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From: Adelaide, SA
Joined: 05 November 2013
Posts: 845
Member
23 March 2014 11:42 pm

Wow nice and chunky!


Team Bogan member - GOLD BABY!

#10

dazza513
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Joined: 08 September 2014
Posts: 172
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14 September 2014 03:20 am

autosol metal polish, fast and good results

#11

Heatho
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From: Sydney, NSW
Joined: 29 April 2013
Posts: 7,984
Moderator
18 October 2014 08:39 am

I tried the BiCarb method on these Florins but it did not work, I think it's sap from the pine tree the coins were found under, then I thought of "Gumption" after cleaning the shower the other day.

Both coins were in a similar condition, the one I cleaned came up pretty good, still not perfect though, now it can age gracefully again. Also tried it on a 6p which was resting against a 3p for a long time and removed the circle metal stain also.

Not bad stuff for cleaning very dirty and discoloured coins, I think a very fine clay with soap might do a similar job, I wouldn't use it on really valuable coins but worth a shot on stubborn stains. Took about 20 mins with a scrubbing brush too.

The Japanese used fine clays as the final polish on their top Katana swords.

1413581983_20141018_082750.jpg

Last edited by Heatho (18 October 2014 08:40 am)


Minelab GPX 5000, SDC2300, CTX3030, Pro-Find-25, patience, lot's of patience.

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#12

outboard
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From: Belgrave, VIC
Joined: 15 June 2014
Posts: 152
Member
18 October 2014 09:21 am

My mother used to enamel on copper, to clean the copper she would use a mixture of salt and vinegar this is a particularly aggressive method and takes a very short time to see results and leaves the copper very pink and lacking a patina not sure how it goes with other metals try it on some scrap before using and don't use it on really valuable coins

a cheap and nasty alternative to fine clay is cigarette ash, a dampened finger dipped in an ashtray will polish up silver or brass, again very aggressive and not recommended for anything really valuable


If it was easy everybody would be doing it and there would be none left for you and me

#13

Eurekaman
Member
From: Brisbane
Joined: 16 November 2014
Posts: 246
Member
20 November 2014 07:09 pm

Heatho wrote:

I tried the BiCarb method on these Florins but it did not work, I think it's sap from the pine tree the coins were found under, then I thought of "Gumption" after cleaning the shower the other day.

Both coins were in a similar condition, the one I cleaned came up pretty good, still not perfect though, now it can age gracefully again. Also tried it on a 6p which was resting against a 3p for a long time and removed the circle metal stain also.

Not bad stuff for cleaning very dirty and discoloured coins, I think a very fine clay with soap might do a similar job, I wouldn't use it on really valuable coins but worth a shot on stubborn stains. Took about 20 mins with a scrubbing brush too.

The Japanese used fine clays as the final polish on their top Katana swords.

https://www.prospectingaustralia.com.au … 082750.jpg

Mate you have to soak them and electrolisis
Especially the silver coins after 1946 as
They are 50% silver then bicarb
Pre 46 are 92% silver and are easier to clean
I'm talking Florins, 6p, 3p,shillings etc
1966 round 50c PC have a high silver
Content and are also easier to clean
EM


Love The Hobby...Ozzy Metal Detecting FB

#14

KellyJMorrin
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From: Perth, WA
Joined: 21 April 2015
Posts: 11
Member
07 May 2015 11:05 pm

I used the carb soda method as well, very very very good results cool


Home is not where you live but where they understand you.

#15

Eurekaman
Member
From: Brisbane
Joined: 16 November 2014
Posts: 246
Member
07 May 2015 11:11 pm

The bicarb brings them up like new.
I use this on my florin pendant I wear everyday and it shines?


Love The Hobby...Ozzy Metal Detecting FB

#16

josmarc999
Member
Joined: 25 September 2015
Posts: 28
Member
22 October 2015 08:48 pm

I used the same method on some 1966 fifty cent rounds and they came up like new, great result. cool

#17

trev111
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Joined: 06 August 2014
Posts: 43
Member
27 May 2016 12:36 pm

I recently went to queensland for 8 weeks and left a 5 cent piece in salt and vinegar solution.
When I returned, the 5 cent had been cleaned OK , but had reduced in size.
It was so thin that you could bend it easily with your fingers.

#18

Smoky bandit
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Joined: 05 April 2016
Posts: 437
Member
05 November 2016 08:15 am

Nugget wrote:

I have tried the Bi-Carb method on an old Penny but it seems to dry the coin out more than anything. For Copper, try warm soapy water and soft brush then soak in Olive oil for a few days. Personally, I don't bother cleaning Copper coins anymore as the results (for me) have been rather disappointing and not worth the effort.

Citric acid cleans copper verh well...Yoh can get it from woolworths. ..table spoon in a glass...leave a few minutes. ..or until clean big_smile


No pain No gain

#19

Old Mate Cairns
Member
Joined: 26 October 2016
Posts: 10
Member
05 November 2016 11:42 am

Please look up the book value of your coins before cleaning. If you ever want PCGS to grade them you can find you had a coin worth some $$$ and once cleaned is almost worthless.

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