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 Replies: 20 / Views: 3,825 |
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New Member
Australia
4 Posts |
I came across this 1971 piece. Does anyone know what the indents on it could have come from? could it have been from when it was made or ?  |
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Pillar of the Community
Australia
599 Posts |
Reverse pic would be helpfull.
Watch your top knot
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New Member
 Australia
4 Posts |
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New Member
Australia
4 Posts |
Sorry about the pics, I'm struggling with the 300kb upload things.
its just a standard 20 cent piece with the platapus
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Moderator
 United States
56855 Posts |
 to CCF. It is some sort of PMD. What was used to make the damage,could be anything. John1  |
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Bedrock of the Community
Australia
21786 Posts |
Spring loaded click punch indents.
Click punches are used in sheet metal working to accurately locate the start of a hole to be drilled.
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Moderator
United States
187582 Posts |
to the Community! Your post was moved to the appropriate forum for the proper attention.  |
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New Member
Australia
4 Posts |
So is the conclusion defiantly the spring punch or ?
I'm confused
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Valued Member
Australia
128 Posts |
Appears to be PMD. All holes are the same size... It looks like moon craters. |
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Pillar of the Community
Australia
1610 Posts |
@petef7365  It wasn't caused during minting. Unless you speak to the person who made the marks, you will probably never know for certain what caused it. I cannot see such marks adding historical value to the coin so in effect, it is a damaged coin worth no more than face value being 20c. |
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Pillar of the Community
Australia
1333 Posts |
i wonder that people are doing on these coins, testing out on cheap metal? so that they dont ruin actual sheet metal?
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Pillar of the Community
Australia
1610 Posts |
Quote:
i wonder that people are doing on these coins, testing out on cheap metal? so that they dont ruin actual sheet metal?
Nah. Just overly active people. Once had a young guy in the workshop at work who just couldn't keep still. If there was a drill handy while sitting at the work bench he'd drill holes in the bench just to be doing something. I can just imagine him using a spring punch on a coin because there was a punch and coin handy. He ended up joining the Navy which was the best thing for his excess energy. |
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Bedrock of the Community
Australia
21786 Posts |
Punch marking was the way that the ancients tested their gold and silver coins. Chinese chop marks on silver dollar sized coins are a more modern example.
Just deliberate post mint damage in this case.
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Valued Member
Australia
242 Posts |
interesting fine....hbcx1 ... so with my little crator ... it looks like I'm with you ?  |
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Pillar of the Community
Australia
2180 Posts |
Yeah looks like damage on the 1990.
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Valued Member
Australia
242 Posts |
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Replies: 20 / Views: 3,825 |
Posted 12/05/2020 03:37 am
