Re: blow hole
- Thanks. I'll just write Eric Von Klinger for a copy. When I get it,
I'll share the data with the rest of you.
--- In email@example.com, "mrlindy2000"
> Maybe the coinworld link is gone now. 2 or 3 years there I've
> noticed links and features disappear as newer material gets
> It was published in the last few years. I did not note it's author,
> but it was in coinworld for sure.
- It's definitely not an elliptical clip. There are a variety of edge
textures, but you don't see the "belly line" or "breakaway zone"
characteristic of blanking shear.
There's only a little bit of roughness on the edge, so I don't think
this one originated by the blanking die slicing through a region of
interlacing cracks and fissures. If that were the case, the entire
edge would look grainy.
The origin of this fragment is therefore a complete mystery. I have no
doubt it's real. There is subtle metal flow in some of the design
elements bordering the irregular edge. Also, there is no sign of
mechanical damage and no pressure ridges on either face next to the
--- In firstname.lastname@example.org, "Kevin"
> I just looked at the photo. It looks like the fragment looks
> eliptical on two sides. Could it have been a clean football shape
> going into the press and the present irregularity merely do to the
> spreading of the metal during minting?