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Replies: 24 / Views: 4,462 |
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Pillar of the Community
Canada
677 Posts |
I just googled coin making process. How do we eliminate the master punch to the matrix? Or how do we eliminate the master dies to the master punch? Numidan, is your coin die example wore out? Most of mine came from BU rolls and they are already poor examples in uncirculated condition.
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Valued Member
 Canada
219 Posts |
Both coins are from bullion lots in EF circulated condition. As you can see from the picture, the spacing between the head and shoulder and the elbow to the knee, shows very little polishing done on the die.
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Pillar of the Community
Canada
677 Posts |
Are there lines in the left maple leaf, eye ball,G in KG or C and last A in Canada?
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Valued Member
 Canada
219 Posts |
Small lines in the left maple leaf, but none in the eye ball, G, or A.
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Pillar of the Community
Canada
677 Posts |
It could be the same die. I forgot, check for lines around 5 CENTS also.
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Bedrock of the Community
United States
10045 Posts |
I have a 1996 US cent with "lathe lines". It is considered scarce, and a collectable coin. If those lines were present on the master die or hub, I would think it would be a common variety for that year. But what if die blanks were worked on a lathe before impressions were made? If a die blank had some deep lathe lines, would they survive the hubbing process? 
Edited by DVCollector 07/27/2011 12:08 pm
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Pillar of the Community
Canada
677 Posts |
Die blanks I believe are rolled to a specified thickness and punched (like a cookie cutter) before entering the striking chamber and not lathed. I do not think lathe lines would survive many tons of pressure.
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Moderator
 United States
56855 Posts |
I would think that the lathe lines on the die would eventually disappear after a short while of striking, that's why they are "not" common,IMHO. John1 
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Bedrock of the Community
United States
10045 Posts |
Quote: Die blanks I believe are rolled to a specified thickness and punched (like a cookie cutter) I think you're referring to planchets, the round stampings that become coins. Die blanks are the cylindrical pieces of tool steel which undergo hubbing to become dies. These often have a conical profile to better take details during hubbing, a profile which is formed by a lathe.
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Pillar of the Community
Canada
677 Posts |
You are correct, I saw the word blanks and thought planchet. It is a definite possibility. What puzzles me is that the dies,supossibly new,or first striking because of the lathe lines, why dose the coin look like an old worn out die? Can we rule out this as a trial piece?
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Bedrock of the Community
United States
10045 Posts |
Just guessing here, but I would think if some lathe lines remained on the die, and then it was hardened for use, those lines would be there during the whole life of the die? 
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Pillar of the Community
Canada
677 Posts |
In the same hoard of rolls, I found the same reverse die with a (re-cut 5)with lines almost gone. In compairison with all varieties wondered if the dies were the same. In conclusion, the same die was used for both fresh lines and polished away. A different variety lathe line has a different (5). On another type, the same reverse has both no clash and double clash obverse. Each has tell tail signs to a particular die. I feel I must get the rest of the rolls to learn more. It seems the lathe variety must bring 25 dollars to be able to brake even.
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Pillar of the Community
Canada
677 Posts |
Numidan, would you be able to post a pictures of the 5 in the date and 5 cents on the top of the coin?
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Valued Member
 Canada
219 Posts |
One coin has the wdd 5, the other doesn't. For both coins, I did not see anything special for the "5 cents". Hope this helps. 
Edited by numidan 07/29/2011 1:25 pm
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Pillar of the Community
Canada
677 Posts |
Thank you that is the 5 I was looking for. I have it with heavey cameo on the obverse. I also have that 5 in polished obverse. I also have a different obverse with lathe lines with that 5. I also have a straight 5 lathe lines. I'm beginning to think we are going to find more. Let's assume there are very few around because of polishing. The price just went from $25 to ?
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