Silver hammered coin - electrolysis before and after

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Oxgirl36
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Silver hammered coin - electrolysis before and after

Post by Oxgirl36 » Sun May 19, 2019 7:17 pm

Ok found these two on a new field today. Ones a silver half groat the other is a pierced copper coin, probably a jetton. I’ve tried the spit and foil on the hammie but it’s not doing much and I’m scared of damaging it further (it’s pretty poor condition). So do I soak it in lemon juice or electrolysis? The copper I’m stumped with what to do.

I just want to get them good enough to ID really. Any advice you could give I would be very grateful.
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XP Deus !!£$ I use the HOT programme on 17khz, reactivity at 2.5 on v5.21 with the X35 11” coil

Hammered silver 2019 - 19 8=ypr

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Re: Cleaning help please

Post by Me and my boy » Sun May 19, 2019 7:26 pm

Hi Oxgirl,

I would zap the silver one, Defiantly.

Ps well done.
2019 hammies. = 139 (including quarters, halves and broken)
Saxon = 1( broken sceatta)
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Re: Cleaning help please

Post by Blackadder43 » Sun May 19, 2019 7:33 pm

Many moons ago when i detected like a demon i had a similar condition hammy
Over the course of a couple of nights i zapped it, took it out, zapped it, took it out
Finally a lot of the crud fell away and allowed the tin foil trick to do its work
Percy verance (spelling) is needed here
Well done for braving the heat and getting out ::g
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Re: Cleaning help please

Post by SuperRed » Sun May 19, 2019 8:33 pm

Looks a bit flaky that one OG... I'd be tempted to try a soak first.
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Re: Cleaning help please

Post by Fusion » Sun May 19, 2019 9:28 pm

An acid soak won't harm the high silver content hammered, and it may remove a bit of the corrosion, if there's any copper salts, for example. But it's going to need something more effective, like electrolysis to really shift the 'patina'

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Re: Cleaning help please

Post by garrettoldboy » Sun May 19, 2019 10:30 pm

hello, what cleaners do you have ??

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Re: Cleaning help please

Post by Oxgirl36 » Sun May 19, 2019 10:39 pm

I have electrolysis and a good ultrasonic.

I’m thinking I’ll go electrolysis- that is if I can find the darn thing!
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XP Deus !!£$ I use the HOT programme on 17khz, reactivity at 2.5 on v5.21 with the X35 11” coil

Hammered silver 2019 - 19 8=ypr

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Re: Cleaning help please

Post by littleboot » Sun May 19, 2019 10:49 pm

Deffo zap the silver as it will be good enough silver to take it, The jeton/copper leave. Just a touch of wax maybe.
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Re: Cleaning help please

Post by Allectus » Sun May 19, 2019 11:32 pm

A York groat/halfgroat. Definitely in need of a few zaps! ::g

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Re: Cleaning help please

Post by garrettoldboy » Mon May 20, 2019 9:50 pm

Oxgirl36 wrote:
Sun May 19, 2019 10:39 pm
I have electrolysis and a good ultrasonic.

I’m thinking I’ll go electrolysis- that is if I can find the darn thing!
hello, i would do top coin first in the ultrasonic in warm water with a bit of washing up liquid, and bottom one in the electro.

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Re: Cleaning help please

Post by Koala » Mon May 20, 2019 10:10 pm

coppers like that I soak in caustic soda

it will not harm the copper but will ruin any patina by turning it black.

then scrape the black off with a fiberglass pen. Unfortunately its going to fairly blank whatever you do

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Re: Cleaning help please

Post by vladorado » Mon May 20, 2019 10:22 pm

Just rub it with wet baking soda with you fingers.
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Re: Cleaning help please

Post by Oxgirl36 » Mon May 20, 2019 10:25 pm

Electrolysis was used. I like electrolysis now, it’s very satisfying watching it bubble away and the crud literally bubbling off it :D
7D3C3DDA-5DF1-4C2E-8617-32F86416B9C8.jpeg
7260D0F3-8CAB-4385-9024-CA10E935862C.jpeg
For the ID thread go here viewtopic.php?f=120&t=111747

Method


I first soaked it in an olive oil and lemon mix warmed by putting a smaller dish (with the coin and the mix) inside a bigger bowl with boiling water. Left for an hour or two. Washed with soap and gave it a little brush. Then used an old phone charger with warm water and loads of salt. Got it out and used toothbrush after about 2 minutes. The water was filthy so changed it for fresh with more salt. Repeated. Washed it. Then a gentle rub over with tin foil. I wanted to keep some patina.

Last time i tried this I put the clips on according to the instructions supplied but it looks like the supplier has done them the wrong way round =))

Thank you all very much for all your advice and help. It was really appreciated. For now I’ll leave the copper one. I suspect it’s beyond redemption ;))
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XP Deus !!£$ I use the HOT programme on 17khz, reactivity at 2.5 on v5.21 with the X35 11” coil

Hammered silver 2019 - 19 8=ypr

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Re: Silver hammered coin - electrolysis before and after

Post by Lowland » Mon May 20, 2019 10:55 pm

Just need to find some More big’uns to practice on now ::g
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