[Colonial Numismatics] Was copper as shiny in 1785 ? 上市 Deposited
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- From taxi_steve929@yahoo.com Wed Jan 07 04:29:33 2004
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Date: Wed, 07 Jan 2004 12:29:12 -0000
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From: "Steve" <taxi_steve929@yahoo.com>
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Subject: Re: [Colonial Numismatics] Was copper as shiny in 1785 ?
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Luster can be seen unbroken over the devices as well as the fields.
(of course flater fields will show the straight line of luster you
are looking for in the "cartwheel". Actually, "perfectly flat"
fields, I do not believe would show any "Luster"....they would be
reflective as hell ala proof...but no "luster" as I understand it.
steve
--- In colonial-coins@yahoogroups.com, "p6763cla" <randy_clark@a...>
wrote:
> So here's a question about lustre. With the surface flatness
> of modern die ... and polishing technology ... I can see how
> lustre (like the dreaded Morgans) is possible.
>
> But the die used on CT or NJ must never really have been flat
> or planar ... and I doubt their polishing techniques were very
> sophisticated, either. I say this because I am having trouble
> visualizing the grinding equipment for colonial die to get
> a "flat" surface perpendicular to a cylindrical base. So if true,
> and the lustre is not due to polish and flatness, what would
> it be due to, striking pressure ?
> - 2004-01-07
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