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#1

Nugget
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Joined: 27 November 2012
Posts: 6,041
Member
26 December 2012 07:01 pm

With all the different cleaning methods out there, some good and some not so good. I would like to ask what method everyone is using to clean up old coins?

#2

Pete_The_Prospector
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Joined: 13 December 2012
Posts: 408
Member
27 December 2012 07:57 am

For cleaning silvers I've tried that many different ways I've lost count. There's the lemon juice or sticking the coin in half a lemon, CLR, spit and alfoil, even made a electrolisis device out of the missus' old phone charger, she was not happy that day!!! The main thing is to not leave it in any of these methods for to long or it will pitt the coin, and after cleaning it have some bi-carb on hand to make a paste and rub the coin with that to de-activate the acidic action of the cleaning ways mentioned. But if it is a coin of any value, dont clean it as it will de-value it. As for cleaning copper coins, if there's a way I'de love to know myself, electrolisis in a salt mixture works but the coins pit easy and turn orange.


Garrett Ace250, Garrett AT Pro International, Minelab GPX5000, Garrett Pro Pointer, Lesche Raptor, Little Eagle.

#3

dave14110
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Joined: 28 November 2012
Posts: 416
Member
27 December 2012 08:34 am

warm soapy water. nearly all other metheds destroy or devalue coins. It is not recomended to clean old coins. As for Decimal (Current currency) Tumbler seems to work best. Then spend'em.


Detectors Minelab Xterra 70, Minelab Gp Extreme, GPX 5000, Whites surf pro, Fisher 1280x, CTX 3030. + more.

#4

Grechie
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Joined: 05 December 2012
Posts: 19
Member
30 December 2012 05:58 pm

how would you clean chunks of metal?, i found 4 chunks today, there nothing more then lead,  but id like to know how i can clean them to see them better, and to atleast make sinkers out of em if they are lead.


"I broke my leg in 2 places, my doctor told me to stop going to those places"

#5

Prospector steve
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Joined: 29 December 2012
Posts: 152
Member
30 December 2012 10:46 pm

brasso seems to polish them up well, or wack it on the buff wheel like on a grinder setup works sweet, how do u think I got mine looking like new lol. don't tell the coin buyer how it looks so good.

Last edited by Prospector steve (30 December 2012 10:48 pm)


Garrett  AT PRO,Garrett PRO POINTER. River sluice, Minelab 705 dual pack.

#6

Prospector steve
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Joined: 29 December 2012
Posts: 152
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30 December 2012 10:50 pm

Grechie wrote:

how would you clean chunks of metal?, i found 4 chunks today, there nothing more then lead,  but id like to know how i can clean them to see them better, and to atleast make sinkers out of em if they are lead.


steel wool for that should be fine


Garrett  AT PRO,Garrett PRO POINTER. River sluice, Minelab 705 dual pack.

#7

Grechie
Member
Joined: 05 December 2012
Posts: 19
Member
31 December 2012 03:43 pm

thanks, il get some brasso and steal wool and give it some elbow grease


"I broke my leg in 2 places, my doctor told me to stop going to those places"

#8

Sa_bogan
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Joined: 13 December 2012
Posts: 712
Member
31 December 2012 10:26 pm

If you clean the coins they will have no value to them apart from the silver or copper content. Dealers can tell when a 60 year old coin has wear on it but as clean as it was from the mint


CTX 3030 - Search Sa_bogan on youtbe and subscribe

#9

Nugget
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Joined: 27 November 2012
Posts: 6,041
Member
01 January 2013 10:44 am

Sa_bogan wrote:

If you clean the coins they will have no value to them apart from the silver or copper content. Dealers can tell when a 60 year old coin has wear on it but as clean as it was from the mint

I agree. I only attempt to clean unrecognisable coins or ones of no real value in the first place. Cleaning copper coins is the most difficult and I still haven't found a decent method for doing this.

#10

Nugget
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Joined: 27 November 2012
Posts: 6,041
Member
16 January 2013 05:44 pm

DO NOT use the salt and vinegar cleaning method on Copper, it does clean the coin somewhat but it makes it look like absolute crap yikes

#11

the duck
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From: Yarraville West, VIC
Joined: 18 January 2013
Posts: 2,125
Member
20 January 2013 10:39 pm

the best way for copper is to tumble them in fine garnet and they dont lose their patina and come out great takes a while at least a few hours and dont put alot in at once,but dont clean a key date coin let a professional do it dont even rub it with your fingers to get the dirt off


Detectors owned and used Compass, Whites, Garret ground hog,Ace 250, Ace 350, AT Pro, Tesoro Vaquero, Tesoro Sand Shark, Tesoro lobo, Fischer Gold Bug 2, Tesoro Tejon, Tesoro Cortes, Minelab GPX 4000 and 4500, Minelab Etrac

#12

Goldbuzzhashit
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Joined: 06 February 2013
Posts: 272
Member
01 March 2013 05:30 pm

Ha guys, just read the post after finding some pennies and half's, how would a ultrasonic cleaner go? Use one at work for small science parts!  hmm


Garrett infinium, Garrett pin pointer, Mine lab E-Trac, Bunnings true temper trowel, Bunnings bought pick and an expert on finding ring pulls.

#13

Dogmatic
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From: Hunter valley, NSW
Joined: 27 January 2013
Posts: 443
Member
01 March 2013 07:48 pm

The salt and vinegar works well with our current decimal coins. (1/4 cup vinegar to 1 tsp salt) I used one of those plastic drink (Tupperware) mixers/shakers
and shook it up with the decimal coins in it.  Let is sit for a while did it again then new solution, shake, sit, shake, rinse.
come out as good as new.  I suppose the longer it sits the better.  Mine was only about 1/2 hour.

Not sure about older coins.  I cleaned $50 worth of coins in one hit like this.  Many went from unreadable to being able
to go straight back into circulation.  Very little effort.

Last edited by Dogmatic (01 March 2013 08:52 pm)


Whites TDI Pro OZ series, Whites SPP, MinelabSovereign GT, Minelab Pro-Find, SYM 12x45 Half n Half sluice.

#14

Goldbuzzhashit
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Joined: 06 February 2013
Posts: 272
Member
01 March 2013 07:52 pm

Thanks dogmatic.  smile


Garrett infinium, Garrett pin pointer, Mine lab E-Trac, Bunnings true temper trowel, Bunnings bought pick and an expert on finding ring pulls.

#15

Beer Pig
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Joined: 09 March 2013
Posts: 26
Member
11 March 2013 10:05 am

As a coin collector, cleaning coins is not ideal but if they are very grubby try -- for silver they have finally brought back a silver dip which for years was off the shelf including tarnoff. 20 secs s what you should need.  for copper for a complete strip back try silver dip or the best result is green dishwashing liquid and a tooth brush and maybe a toothpick for harder lumps

hope this helps

Harry


Learning a 4500 and occasionally using 2 dodgy sluices.

#16

Jasonc2861
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Joined: 20 May 2013
Posts: 42
Member
24 May 2013 11:33 am

I clean my copper still with citric acid,don't know whether you'd use that on a copper coin.then nuetralize with bicarbonate soda. smile


Garrett AT pro.

#17

AussieTreasureDigger
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Joined: 21 May 2013
Posts: 199
Member
24 May 2013 06:57 pm

I use a tumbler on the coppers (i am putting together a vid on this) and Bicarb and some good old finger work on the silvers. The latter method cleans up the 1910-1945 silvers better than the 1946> on the later ones i use some Lectra washing soda foil and warm water. There's some video coming up on the cleaning, and yes i know the purests dont like the coins cleaned but they are my coins and have mostly been well used and in the ground for 100+ years and worth 11/10 of jack.

1369382092_flor1.jpg

1369382115_flor2.jpg

smile


Minelab CTX3030, SD2200V2, Pro Find, Garrett AT Pro U.S, Pro Pointer, Tesoro Tejon, Lesche Tools

#18

Nugget
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Joined: 27 November 2012
Posts: 6,041
Member
24 May 2013 08:08 pm

Thanks ATD. I've been using the bi-carb method for a little while now https://www.prospectingaustralia.com.au … php?id=663.

I would love to see some before and after pics of your Coppers, I've all but given up on cleaning them.


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