9427Re: [Error Coin Information Exchange] Re: Unusual upset on a nickel planchet
- Sep 1, 2005Flat top from hitting the top/bottom of the mill as it wobbled? Not
sure about the relocated metal. I don't understand enough about what
you're seeing. It's all wild guessing anyway. bo}
--- Mike Diamond <mdia1@...> wrote:
> Anything is possible. But I don't think it could account for the____________________________________________________
> flat top of the proto-rim or the relocated metal internal to that
> --- In email@example.com, "Kevin L.
> Stewart" <Grimaldon@y...> wrote:
> > Mike,
> > If the upset mill was a little to narrow and the blank wobbled a
> > from horizontal as it passed through could it produce rounded edges
> > like you see?
> > KevinS
> > --- Mike Diamond <mdia1@a...> wrote:
> > > I have the off-center nickel, and the planchet is even more
> > > than I anticipated. It shows a type of upset I've never
> > > before -- if it is, in fact, upset.
> > >
> > > The edge is neither trapezoidal in cross-sectional profile nor is
> > > flat. It is convex and rounded in cross-sectional profile. The
> > > proto-rim is very high and is flat on top. Just inside the
> > > rim, one can see an area of metal that's been carried in from the
> > > edge and flattened down to form a crenulated border. The rounded
> > > edge and relocated metal reminds me of some altered coins I've
> > > but this defintely took place prior to the strike.
> > >
> > > The planchet itself has a buff gray color and slightly matte
> > > microscopic texture which is unlike a typical nickel planchet.
> > > weight is within the normal range of variation for nickels (4.9 g
> > > my quickie scale).
> > >
> > > Perhaps these odd planchets are being rolled through a device
> > > than an upset mill, perhaps after normal upset or in place of
> > > upset. It could be intentional or accidental.
> > >
> > > I'm stumped (what else is new?), but this makes great fodder for
> > > upcoming article.
> > >
> > ____________________________________________________
> > Start your day with Yahoo! - make it your home page
> > http://www.yahoo.com/r/hs
Start your day with Yahoo! - make it your home page
- << Previous post in topic Next post in topic >>