Author Topic: The process of making dies for coinage.  (Read 2604 times)

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Offline Filat

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« Last Edit: April 18, 2015, 07:10:45 PM by Filat »
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Offline THCoins

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Re: The process of making dies for coinage.
« Reply #1 on: April 19, 2015, 08:11:52 AM »
Very instructive series of photographs, thanks for posting !

Offline Filat

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Re: The process of making dies for coinage.
« Reply #2 on: April 19, 2015, 10:00:56 AM »
The sequence of formation of the working stamp during the slow plastic deformation of the tapered portion of the steel billet.
« Last Edit: April 19, 2015, 10:26:54 AM by Filat »
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Offline Filat

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Re: The process of making dies for coinage.
« Reply #3 on: April 28, 2015, 10:22:13 AM »
Italian mint in Rome (1950) → see. Video on the link:


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Offline Filat

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Re: The process of making dies for coinage.
« Reply #4 on: April 29, 2015, 12:15:39 PM »
Mint in Philadelphia ("about" 1940) → see. Video between 2.54 - 3.30 minutes on the link:


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Offline Figleaf

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Re: The process of making dies for coinage.
« Reply #5 on: April 29, 2015, 12:28:30 PM »
Excellent picture collection, Filat. Thank you!

Peter
An unidentified coin is a piece of metal. An identified coin is a piece of history.

Offline THCoins

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Re: The process of making dies for coinage.
« Reply #6 on: April 29, 2015, 02:37:15 PM »
Must say i very much prefer these examples of old-fashioned craftsmanship over the modern fully-computerized reproduction processes. Thanks for posting !

Offline Filat

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Re: The process of making dies for coinage.
« Reply #7 on: April 30, 2015, 11:47:33 AM »
The process of forming the working part of the stamp for coinage by pressing the tapered portion of the working die steel billet in  matrix hub, the Mint in London (1925) → see. Video link:


« Last Edit: May 01, 2015, 07:13:58 AM by Filat »
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Offline Filat

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Re: The process of making dies for coinage.
« Reply #8 on: May 01, 2015, 05:40:04 PM »
Matrix hubs ("positives of") and "working dies" ("the negatives") for the production of of Bolivian of coins of the eighties of the XIX century at the mint in Potosi (Bolivia).
« Last Edit: May 01, 2015, 05:50:11 PM by Filat »
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Offline Filat

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Re: The process of making dies for coinage.
« Reply #9 on: May 25, 2015, 01:08:33 PM »
I emphasize:

1. Formation of the working part of the stamp, in the process of slow plastic deformation of the tapered portion of steel billets, occurs once.
2. No repeated die hubbing, offset, doubling of contours of letters, numbers, pictures here and there can not be.

Against what I have said above objections have anyone?
« Last Edit: August 12, 2015, 12:58:54 PM by Filat »
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