Has anyone seen this type of issue before? looks like the alloy isn't quite right? I have heard about this but had't seen it. Can't see any sign of pmd.
The discolouration seems similar to some types of copper toning.
Obverse (https://drive.google.com/file/d/0B6uNKX2KSgAyNkEyT1FFbTdWV0k/view?usp=docslist_api)
Reverse (https://drive.google.com/file/d/0B6uNKX2KSgAyV3NXMFVkMmdGNWs/view?usp=docslist_api)
Side (https://drive.google.com/file/d/0B6uNKX2KSgAyaXNFeVBTVWcyZ3M/view?usp=docslist_api)
Not sure, but it looks like it has come into contact with some high heat in that area.
oxytorchitis :ok:
Quote from: 'trout' pid='82053' dateline='1448884755'oxytorchitis :ok:
:i_agree:
Quote from: 'Nevol' pid='82066' dateline='1448922370'Quote from: 'trout' pid='82053' dateline='1448884755'oxytorchitis :ok:
:i_agree:
Love that name, I agree with all the above statements.
No argument from me either. 100% agree with contact with a high heat source.
Quote from: 'SirDave' pid='82049' dateline='1448883260'I have heard about this but had't seen it.
This is what you get when the missus forgets to check the pockets before incinerating your corpse. ;)
I was wondering about heat. Sounds like it's likely. Coin looks remarkably good though and the discolouration only shows up in certain light. I might try an experiment with some coins and a flame.
If the cause is from oxytorchitis I reckon it wasn't deliberate. Who would intentionally attack a coin in that way and just singe the edge? But I have seen a few instances where the odd person has been set alight accidently on purpose by the gas axe, and maybe there was a coin in their pocket :biggrin:
? cigarette lighter?
I normally carry my marking chalk in my pocket when I have to use an oxy torch or doing some welding .
I have often grabbed a couple of coins out of my pocket and dumped them on the workbench when I go for the chalk.
it is not unforeseeable that a coin may cop a glancing blow from the torch or get a white hot lump of metal dumped on it with this scenario.
I was thinking of this when I came up with the " oxytorchitis " description :ok: