1919 Australia Half Penny Weird? - Coin Community Forum

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Author	Replies: 5 / Views: 3,291
urbanski New Member Australia 9 Posts	Posted 01/07/2011 5:09 pm Hi I am new to collecting and I am trying to determine what caused the appearance of one of my 1919 half pennies. It oddly has clear strikings on the text and smooth edged. It is also 1/3rd thinner than other half pennies. I first thought chemical damage then looking at the text and edge has no pitting, cant work it out. Can you tell me what it is. Report this Post to the Staff

sel_69l Bedrock of the Community Australia 21788 Posts	Posted 01/08/2011 12:52 am All of what I post here is my logic. I may be well off the beam. The coin may have spent at least some significant amount of time in an aggressive environment. I think it is some sort of slow corrosive attack. When a coin is struck, there are raised details and flat field surrounding them, resulting in differing metallic crystalline structure between the raised detail and the more compressed flat field. There is also more chance for the metal to be displaced sideways in the areas of the field. This results in the metal being more chemically resistant in the raised detail. Nevertheless, all of the coin is still subject to chemical attack. If all of my reasoning is correct, the result is as you see now. Report this Post to the Staff
urbanski New Member Australia 9 Posts	Posted 01/08/2011 04:22 am Hi, and thanks, but how does this explain the non effected rim of the coin and that its 1/3rd less thick than normal coins. I suspect it must be the reason but as for the thickness and non corrosive effects on the rim throws me. Cheers Report this Post to the Staff
markn Pillar of the Community Australia 1295 Posts	Posted 01/08/2011 05:45 am Dipped in acid. I've seen several like it. Report this Post to the Staff
urbanski New Member Australia 9 Posts	Posted 01/08/2011 06:17 am Many thanks, I guessed it may have been, at the end of the day is it worth 50cents or just bin it? Report this Post to the Staff
sel_69l Bedrock of the Community Australia 21788 Posts	Posted 01/08/2011 08:46 am have a look at the thread: '101 uses for coins?'. Report this Post to the Staff
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