Orange-Peel Surfaces
LeeG
Posts: 12,162 ✭
Here is PCGS's definition:
The dimple-textured fields seen on many Proof gold coins; their surfaces resemble those of an orange, hence the descriptive term. Some Mint State gold dollars and three-dollar gold coins exhibit this effect to some degree.
Have any:
mgoodm3 image
The dimple-textured fields seen on many Proof gold coins; their surfaces resemble those of an orange, hence the descriptive term. Some Mint State gold dollars and three-dollar gold coins exhibit this effect to some degree.
Have any:
mgoodm3 image
0
Comments
much of what's seen is most likely Proof dies used for business strikes or even a stressed die.
calling Newmismatist, where are you???
- Bob -
MPL's - Lincolns of Color
Central Valley Roosevelts
This 1899 half eagle is a good example.These pics can only give you a hint.
60 years into this hobby and I'm still working on my Lincoln set!
<< <i>Here is a Skyman Jefferson that exhibits some of this effect.
>>
there are many spectacular jeffersons out there that exhibit this, and I LOVE EVERY ONE OF EM
Go BIG or GO HOME. ©Bill
Chris Pilliod has found that Orange Peel is caused by the high annealing temperature used to soften for silver and nickel was used on gold and coppper as well. This higher temperature created larger grains in the metal. The grains are much more visible on finely mirrored proof gold and copper.
I originally believed that orange peel was formed on the die during the annealing of the die, not the planchet. Chris proved me wrong. The clue is found in the observation that orange peel does not exist on silver or nickel. It only is seen on on gold and copper, which have a lower melting point.
CG
Edit: I put a different one up.
ms68?