Re: Nickel on clad planchet!?
- Mike, if its struck on a dime planchet, and the die distance is set
low enough, the strike will be strong. I think the copper ring around
the edge may be that the copper core expanded more than the clad
layers. Especially considering that the core is much thicker than the
clad layers, and therefore there is more material in the core, it
seems obvious that the core would squeeze out past the clad layers,
when not retained by the collar. Is the fissure u see simply the edge
of the clad layer, where the core has risen up around the edge, much
like the coins struck thru a clipped planchet?
--- In email@example.com, "Mike Diamond"
> The weight on the slab reads 3.2 grams. According to myis
> calculations, this is exactly the weight you'd expect of a nickel
> struck on dime stock.
> It's odd, then, that the strike is so strong. The vast majority of
> nickels struck on dime planchets are weakly struck. This weakness
> even more unexpected than a well-struck dime stock quarter(quarters
> being thinner than nickels). However, provided there was anassociated
> unusually small minimum die distance, a strong strike is certainly
> within the realm of possibility.
> I see Fred Weinberg purchased the coin. He might want to check out
> the coin's specific gravity along with its composition. Such a
> strong strike suggests the possibility that the specific gravity is
> lighter than that of a dime.
> --- In firstname.lastname@example.org, "Mike Diamond"
> <mdia1@a...> wrote:
> > Here's a 1971-D nickel purportedly struck on a clad planchet:
> > http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=3031415070
> > It's certainly a bizarre looking coin and it's certainly not
> > a "normal-looking" wrong planchet or wrong stock error.
> > Both the obverse and the reverse have a circular, circumferential
> > fissure lying just inside the rim. Similar fissures are
> > with rolling folds, struck-in rim burrs, and embedded scraps.Fred
> > Weinberg came up with a number of wierd looking 1997 quarterswith
> > similar fissures. I could only surmise that the planchet wasthat
> > originally larger than a nickel and that it was compressed so
> > the edge was squooshed over the remainder of the planchet andthen
> > struck in.with
> > The obverse has copper-colored areas that may represent exposed
> > core. Then again, they also resemble copper that may have been
> > deposited on the surface prior to the strike.
> > It's too bad that no views are available of the edge. I wouldn't
> > spend this much money without being able to ascertain for myself
> > the edge really shows an exposed copper core, rather than, say, a
> > superficial coating of copper.
> > It's undoubtedly a wrong planchet, and NGC may be completely
> > in their diagnosis. Both Fred Weinberg and Mike Byers came up
> > nickels struck on nickel-sized planchets punched out of whatthe
> > to be clad (possibly quarter) stock. However, neither featured
> > wierd fissure, which suggests some sort of pre-strike damage or
> > modification to an oversized planchet.
> > A real puzzler.
- --- In email@example.com, pwrwgndrvr
> Mike, if it's struck on a dime planchet, and the die distance isset
> low enough, the strike will be strong.Yes, whether it's a dime planchet or dime stock, if the minimum die
distance is unusually small, you'll get a strong strike. But this is
quite uncommon among the numerous nickel-on-dime planchets that I've
I think the copper ring around
> the edge may be that the copper core expanded more than the cladthe
> layers. Especially considering that the core is much thicker than
> clad layers, and therefore there is more material in the core, itedge
> seems obvious that the core would squeeze out past the clad layers,
> when not retained by the collar. Is the fissure u see simply the
> of the clad layer, where the core has risen up around the edge,much
> like the coins struck thru a clipped planchet?I know what you're saying, but this is entirely different. On those
rare occasions when the copper core does extrude past the outer clad
layers (most often seen in off-center strikes) there is no fissure.
The circular fissure seen in this 1971-D nickel, on Fred's three
wierd quarters, and on Fred's Kentucky quarter-on-dime planchet, is
quite dramatic and indicates that some overhanging metal was struck
into the coin. Exactly how the planchets were damaged or altered
prior to the strike to create this effect, I couldn't say. My best
guess is that they were severely compressed in some rotating squeeze
device. It may be a malfunctioning or improperly adjusted upset mill
(that's the most likely candidate), but who really knows?