Discussion in 'Coin Chat' started by Bonedigger, Jan 27, 2006.
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The luster is the result of the flow lines on the surface of the coin. And if you examine a Peace and a Morgan under high magnification you will see the surface of the Morgan is rougher than that of the Peace. I attribute this to the die preparation and improvements in technology. I believe that the surface of the dies ( which is what creates the flow lines ) for the Peace were polished smoother than the Morgan.
For example - a simple illustration I have used before to demonstrate luster - this is what the surface of a Morgan looks like -
This is what the surface of a Peace looks like -
Because the flow lines on a Morgan are deeper than the flow lines on a Peace it exposes more surface area of the silver to the air. Thus the surface of a Morgan tones more readily and deeper than a Peace does. Anyway - that's my simple explanation for it.
Dang... Have you ever thought about doing this FULL TIME for a living
Nahhhhh - I got a day job already. This I do for fun
Doug - Great explanation
All of that said - what happened when they released the Franklin and Kennedy 90% silver half? Did they forget all of those technology improvements and die prep changes (not that I mind)?
I am not trying to argue the point or disagree (because it sounds reasonable) but I have seen some really nicely toned Franklin's and Kennedy's.
I guess I will have to put that new microscope to work.?.
My thoughts exactly. Great post GD. :thumb:
These coins are the best I have and I selected areas that would have the least amount of wear and tear to try and get metal that had not been altered too much.
All are at the same power - 90X and all shot through the air-tites.
I rechecked the focus on the Franklin and it is clear down to the open fields.
You have to look at the 2007 Unc Eagle - wow and cool!
The 42 Liberty and Kennedy really surprised me!!! I will have to grab a better 64 Business strike Kennedy for tomorrow.
Tell me what you think! Any comments on the 2007 will also be appreciated!
BTW - I am glad that 24 is toned so nicely - wow - it hides a lot!!!
Your explanation was very good and it made sense. The interesting part was to look at the newer coins (40s - 60's) and see how they reverted back to a rougher surface. It probably helps to explain the toning that shows up in the newer coins.
I brought in those business strike Kennedy's and a circulated Franklin to look at today. I'll try to post pictures later.
Very neat visual for sure...
Thanks Cloudsweeper99 - Sometimes pictures tell quite a story!
Wow. :thumb: Man, heck with only getting a job, have you ever considered writing a book? Man, you're good. :thumb:
For me, that's just how it is.
1st is a well circulated 63 Franklin. http://i235.photobucket.com/albums/ee123/USS656/1963DFranklinabovedate.jpg
2nd is a Business Strike 64 Kennedy. This one has a small surface issue in front of his chin where a layer is pealing a bit.
3rd is a 68 Kennedy that has seen a little circulation but is in pretty good shape. http://i235.photobucket.com/albums/ee123/USS656/1968KennedyDRightofI.jpg
Here is the group shot. http://i235.photobucket.com/albums/ee123/USS656/126_2630.jpg
It is interesting to see how these surfaces very from coin to coin.
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