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All Forums Category: Australia, New Zealand, and South Pacific (Oceania) Coins and Currency Forums Forum: Variety & Error Coins, Bank Notes, Paper Money: Australia, New Zealand, & South Pacific (Oceania)

Is This PMD Or From The Minting Process?

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biggfredd
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 Posted 12/27/2011  12:34 am  Show Profile   Bookmark this reply Add biggfredd to your friends list Get a Link to this Reply

Quote:
It mentions the rim will only show thinning if the rim is formed at the planchet stage. Is the rim of the 1c coin formed at planchet stage or as part of the striking?


Isn't the rim made by the collar ("third die")?

I think rather than call it "thinning", it should be called "metal flow". With the missing area, striking pressure will cause the metal to flow into the hole, just as it flows into the recesses of the die.
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erkle
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 Posted 12/27/2011  03:46 am  Show Profile   Bookmark this reply Add erkle to your friends list Get a Link to this Reply
so if it flows wouldnt it be rounded on the clipped edges at some area?
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biggfredd
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 Posted 12/27/2011  09:31 am  Show Profile   Bookmark this reply Add biggfredd to your friends list Get a Link to this Reply
slightly, best viewed from the edge, which is not shown.
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All Forums Category: Australia, New Zealand, and South Pacific (Oceania) Coins and Currency Forums Forum: Variety & Error Coins, Bank Notes, Paper Money: Australia, New Zealand, & South Pacific (Oceania)



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