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Metal Detecting Discussions => Beat the Doc... Identify your finds here => Topic started by: mooster on May 07, 2011, 10:28:09 AM



Title: gold coin id
Post by: mooster on May 07, 2011, 10:28:09 AM
hi,could you identify the mint mark and also tell me if it is a love token because of the way it has been bent.
many thanks
kelly 8)


Title: Re: gold coin id
Post by: Chef Geoff on May 07, 2011, 10:41:53 AM
Intriguing coin, is it 1688 and Have you got a pic of the obverse?
the coin looks more bent (squashed) rather than folded as they do when made into a love token. As far as I'm aware all James II coins are London mint.


Title: Re: gold coin id
Post by: mooster on May 07, 2011, 12:19:33 PM
hi, hope this is a better pic
kelly


Title: Re: gold coin id
Post by: Neil on May 07, 2011, 02:18:31 PM
Thats a lovely find mate. I think its a George II gold half guinea or guinea depending on size.

Cracking bit of gold.

Well done

Neil


Title: Re: gold coin id
Post by: rjm on May 07, 2011, 02:55:41 PM

Nice find. Well done.


Title: Re: gold coin id
Post by: jtalbot0001 on May 07, 2011, 03:04:44 PM
Hi Kelly, a very nice find, well done! This isn't George II but will be James (IACOBVS) II. The size of the coin will determine the type of coin as Neil says.


Title: Re: gold coin id
Post by: Chef Geoff on May 07, 2011, 04:08:47 PM
As I said (cough cough Neil) it's James the second ::), 1688 on one side, Jacobus on the other "I think its a George II gold half guinea"  ;D  wish you'd gone to SpecSavers ;)


Title: Re: gold coin id
Post by: jtalbot0001 on May 07, 2011, 04:20:45 PM
Hi Geoff, in my Spinks there is gold coins for James II dated 1688, Two Guineas, # 3399, One Guinea, # 3402/3 and Half Guinea # 3404. Even Five Guineas are listed # 3397-3398. Spinks 2010. Cheers Jon.


Title: Re: gold coin id
Post by: Chef Geoff on May 07, 2011, 04:22:17 PM
Yes just noticed Jon, it would of helped if I had read past line one lol


Title: Re: gold coin id
Post by: nomad on May 07, 2011, 05:36:20 PM
mmm...nice find..its a shame its a little bent.


Title: Re: gold coin id
Post by: rjm on May 07, 2011, 09:26:21 PM
mmm...nice find..its a shame its a little bent.

Give me bent, folded, broken, clipped or rolled...........as long as it's gold !!!  ;D


Title: Re: gold coin id
Post by: TheLoveDoc on May 07, 2011, 09:29:23 PM
now thats a stunner fair play....bent or not.. a cracking coin , well done !!!  :o


Title: Re: gold coin id
Post by: Metalmickey on May 07, 2011, 09:31:18 PM
Luvly  :o


Title: Re: gold coin id
Post by: Pipster on May 07, 2011, 11:49:28 PM
Nice coin !!!!  :o :o


Title: Re: gold coin id
Post by: mooster on May 08, 2011, 07:35:54 AM
hi all, thanks for all your comments, if it is that its not been bent purposely would you try and straighten it, if so whats the best way of going about it ?
kelly,


Title: Re: gold coin id
Post by: Chef Geoff on May 08, 2011, 09:32:09 AM
Gold is relatively soft and so should bend back quite easily, when straightening any coins I tend to use a wooden pencil in the same manner as you would use a rolling pin. Good luck


Title: Re: gold coin id
Post by: mooster on May 08, 2011, 09:45:42 AM
thanks for that geoff. ill give it a go.
Kelly


Title: Re: gold coin id
Post by: tyna on May 08, 2011, 11:09:13 AM
Gold is gold - straight, bent, whatever, it's always nice to find.  Well done mooster and good for you   8)


Title: Re: gold coin id
Post by: WeLsH Boi on May 08, 2011, 02:38:53 PM
Nice coin m8. Try warming it up in a pan of water it makes the metal a bit more malleable. I done the same with a Mary groat. Warmed it up for a couple of mins in a pan of boiling water, placed it in between 2 plastic chopping boards and gentely tapped it flat. Worked a treat.


Title: Re: gold coin id
Post by: Chef Geoff on May 08, 2011, 02:59:25 PM
your only fooling yourself lol. water can only get to 100* and will have no effect on gold or silver in any way. for silver you need to anneal it which will mean getting the coin to at least 600* (and preferably 900*) to have any worthwhile effect.
Please DO NOT rely on hot water it's only cleaning your object and nothing else.


Title: Re: gold coin id
Post by: nfl on May 08, 2011, 03:54:26 PM
i dont know,i had a gold sov that was bent,chucked it in a pan of boiling water for 20 mins took it out placed it between 2 blocks of wood then repetadly smacked the wood with a hammer ::)........ ;D ;D ;D..it took the bend out ;)


Title: Re: gold coin id
Post by: WeLsH Boi on May 09, 2011, 07:54:43 AM
Granted your not going to hit smelting temps. But the hot water defiantly makes a difference in the straightening process. From my limited  experiences any way.


Title: Re: gold coin id
Post by: Chef Geoff on May 09, 2011, 08:17:21 AM
Smelting temperature is 1600* and you have no worries of reaching that, but what you are trying to do is anneal. This is not making the metal soft in fact as soon as you have heated the metal you cool it and work on it cold. When a coin is first made the crystalline structure is all laid down in a regular form due to the heat, when it is then bent the structure is stretched out of shape and gaps appear at a microscopic level, which makes the structure very brittle and this is what causes some items to snap when being straightened.
Annealing is a process of heating and thus realigning the crystals so that as you begin to straighten the coin each bend is the first.
Depending on the severity of the bend, the coin may need heating several times before it is straight.


Title: Re: gold coin id
Post by: tyna on May 09, 2011, 03:40:27 PM
So you all - put that in your pipe and smoke it  :o ;D ;D


Title: Re: gold coin id
Post by: The Doc on May 09, 2011, 05:40:50 PM
Smelting temperature is 1600* and you have no worries of reaching that, but what you are trying to do is anneal. This is not making the metal soft in fact as soon as you have heated the metal you cool it and work on it cold. When a coin is first made the crystalline structure is all laid down in a regular form due to the heat, when it is then bent the structure is stretched out of shape and gaps appear at a microscopic level, which makes the structure very brittle and this is what causes some items to snap when being straightened.
Annealing is a process of heating and thus realigning the crystals so that as you begin to straighten the coin each bend is the first.
Depending on the severity of the bend, the coin may need heating several times before it is straight.


I totally agree Geoff. Any coin that will straighten after being boiled in water would have done just as well cold. Annealing is the only reliable way to go.

I'm not sure if I would have been brave enough to do it, but watch this as an example of superlative work, with Gordon straightening an Offa penny:

http://www.mlotv.com/view/204/offa-saxon-coin/ (http://www.mlotv.com/view/204/offa-saxon-coin/)


Title: Re: gold coin id
Post by: WeLsH Boi on May 09, 2011, 07:56:44 PM
Just read an interesting article on annealing here. Though I tried the water method after being instructed to at the fosse way rally on a bent hammered. My first hammered actually it seemed to work. So I take it that it would of straightened just as well cold? As I have a lizzie hammered that's a little bent and wouldn't mind flattening it.


http://www.ukdetectornet.co.uk/index.php?option=com_content&view=article&id=75%3Astraighten-a-hammered-coin&Itemid=60 (http://www.ukdetectornet.co.uk/index.php?option=com_content&view=article&id=75%3Astraighten-a-hammered-coin&Itemid=60)


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