Real interesting Jeff error

JRocco

Looking thru an original roll of 95P Jeffs and came across this nice struck thru error. I love the almost full steps. Any ideas what this might be struck thru? Grease??? Goop???

coinguy89

How is that an error, looks okay to me?

Rampage

Struck through grease. How does the obverse look?

Nice coin find.

JRocco

Interesting coin, The obverse has issues and some struck thru areas also. When you look at the rim, the rim appears more narrow than normal and causes both the obverse and reverse to be struck above the rim width. Anyone?

cladking

I suspect that it is a defective planchet rather than a striking problem. It looks like
a lot of the planchet scratches are still present and this would be unusual if the only
problem were grease.

What is the obverse problem? Is it a corresponding weakness across from the reverse
problem?

JRocco

Here is another pic of the obverse. I had to play with the contrast and gamma with this pic to try to over exaggerate the problems. There appears to be areas of apparent strike thru in front of and behind the head, as well as a grainy area that covers most of the face and neck area. There are very weak areas in the hair also that almost look like a weak strike. Maybe an overly hardened planchet?

cladking

It looks like there was a thin piece of debris or slag on the strip when it was
rolled out. It flaked off before the strike, possibly even before it was blanked.
This left the metal too thin in this area to strike up properly.

It does look like there was some grease on the die or the planchet also.

rich

The reverse looks like a strike thru grease.I totally agree with cladking,it could also be a defective planchet and grease strike .Usually the problem is only one sided.You have a double sided error.Its a nice find. Congrats!.

Smitty79

I got a bank roll of TX quarters a month or so ago where most of the quarters had similar marks on both sides and was told they were struck through grease.

Link

The other day in pocket change I got a Peace Medal nickel with the same problems on both sides.

errormaven

There is no doubt in my mind that this was struck through "grease". A slightly rough texture is very common, since the hardened, compacted gunk itself has a rough texture very often. The texture on the coin can superficially resemble the tumbling marks on an unstruck or poorly struck planchet.

The term "grease" is a misnomer, of course. It's clear from the variety of textures and effects that are associated with such errors, that there is more than one kind of obstructing matter.

On those rare occasions when the "grease" is retained, it is most often a hard, crusty, black substance. It's alleged to be a paste made of metal dust and grease, but this has never been substantiated by any chemical analysis. In other cases, unadulterated, compacted metal dust of a higly reflective nature has been implicated. In still other cases it's clear that a smooth, viscous fluid (possibly grease or oil) is responible. The latter is most characteristic of zinc cents.

This is why I always put the word "grease" between quotation marks, to indicate that it is merely a shorthand designation for various forms of die fill.

JRocco

Thanks for all the input guys, Its really appreciated when you put the time in to explain and/or give your opinions.