coinworldTV Your explanation of the odd edge is that it was somehow due to;
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I guess, that this is an error, made at the mint, probably caused by an uneven planchet. I do assume, that the coin is authentic, its weight is 26.94gm.
and further
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What we have here is a large segment of the edge, which seems to have been not in contact with the edger device.
This is of course physically impossible when the coin is edged with a two die edger.
This apparatus applies the design to opposite sides of the coin at the same time. A loss of contact on one side causes an identical loss on the other. So the portion of this coin that has no edge design should have a matching loss on the opposite side.
That is a simple fact.
The edge looks like many of the Contemporary Silver Counterfeit coins I have examined. There are uneven spaces between the circles and rectangles and some of the rectangles themselves are of various lengths.
I would suggest that what we see here is one terribly deteriorated die opposite a far less deteriorated edge. The edge shows what the two dies looked like - it is the only answer.
Regarding the deterioration of the GRA the suggestion is:
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coloneljohn Just a guess ... the GRATIA could be the victim of bifurcation and a partially broken collar in that GRATIA area?
coinworldtv Hi Colonialjohn,
your guess is very probable and I also do think, that the collar (edger device) issue might be the reason for the blurred GRA letters.
This explanation of why
Die Deterioration would be focused on a small area could be correct for a collared strike.
However, Mexico City did not use a collared press. The screw press was open sided and without a collar die stress would be uniform over the 360 degree perimeter.
I would support the original position that the problem is related to a transfer process.
If you understand how the original coins were minted - both of these disappear as possible minting errors.
Posted 03/12/2016 3:14 pm
