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#1

Blueboy
Member
Joined: 15 September 2013
Posts: 12
Member
16 September 2013 12:42 pm

How do you guys go about cleaning all the old pennies etc?
Must say I got thinking about doing this for the potential of a gold nugget, but I'm really enjoying the video's with all the old coins coming out.
BB

#2

headbut
Member
From: Sydney, NSW
Joined: 13 May 2013
Posts: 1,449
Member
16 September 2013 01:52 pm

Hi BB , you really shouldn't clean copper coins , silver OK with bi- carb soda. If the copper coin is corroded, it wont make that much difference if cleaned ,& would need to be scarce/rare to be worth anything.

Cheers Paul


Gem & Gold Walbanker /Minelab X-Terra 705 Dual pack/12v mini sluice/Determination

#3

Blueboy
Member
Joined: 15 September 2013
Posts: 12
Member
16 September 2013 01:58 pm

Thanks Paul, good to know.
BB

#4

Jasonc2861
Member
Joined: 20 May 2013
Posts: 42
Member
17 September 2013 07:41 pm

I soak my silver coins in lemon juice,makes em look brand new almost.!


Garrett AT pro.

#5

Nugget
Member
Joined: 27 November 2012
Posts: 6,041
Member
17 September 2013 08:00 pm

As headbut said, don't waste your time with copper coins as you'll most likely do more damage than good. Check out this previous post of mine regarding cleaning silvers https://www.prospectingaustralia.com.au … php?id=663

#6

Blueboy
Member
Joined: 15 September 2013
Posts: 12
Member
17 September 2013 11:12 pm

Cheers guys... great tips.
BB

#7

the duck
Member
From: Yarraville West, VIC
Joined: 18 January 2013
Posts: 2,125
Member
18 September 2013 11:24 pm

If you must soak them in olive oil for a few weeks you can tumble them in fine garnet but never clean a rare coin


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

#8

Muttering
Member
Joined: 02 October 2013
Posts: 73
Member
02 October 2013 04:40 pm

Don't clean coins. With copper bronze coins you can get the dirt off by dry brushing carefully with a stiff stubby arty brush, do this sowly and stop when you get out of the dirt and into corrosion.

Don't  drop bronze and copper coins into water to wash them, especially if it is not de-ionised. I've seen it directly affect a possible $500 halfpenny. Seriously don't wash them. Let them dry out and then dry brush them with a paint brush. Unless you know for sure they are only worth bullion.

Definitely don't clean rare coins. Even silver. Coin traders can tell if they have been spruced up and this detracts from their value.

Of course you don't know if they are rare sometimes until after you have cleaned I mean, ruined them. cool

If a date is hard to read I try using a photo editing application like GIMP or photoshop or similar. I scan the coin directly in a flatbed scanner at the highest resolution and with the levels or curves tool I mucked around, focusing on the area I think is the date area. (google is your friend here if it is an unfamiliar coin type).

By watching the area you can get a good show of the date while manipulating the levels. A bit like tilting it in the light only digitally and at a goodly magnification.

Example:

1380692014_1854farthing.png

This is a farthing and you can see the young Victoria's neckline, googling that coin type will let you know that the date is under the neckline. It would work better as a movie of of manipulating the curves or levels (contrast and balance in simpler tools) but the area below the neckline looks like:

1380692309_1854farthingclose.jpg

#9

Nugget
Member
Joined: 27 November 2012
Posts: 6,041
Member
02 October 2013 05:21 pm

Thanks for sharing that Muttering. I'd actually thought about doing it to a couple of old coppers I've found but just got around to it yet, will have to give it a go soon.

#10

Blueboy
Member
Joined: 15 September 2013
Posts: 12
Member
15 October 2013 10:18 am

Cheers for the great post, really looking forward to picking up some coins.
BB


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