Kudegras, Here is an older thread you might find interesting, especially the article in coin world that is mentioned....
The newer designs seem better than the early ones, but no, they are not. Another experimenter did show that a thin layer of epoxy along the edge...
True, the valves did have a hard time after a while, but I found a small piece of scotch tape over the outside valve flap helped tremendously at...
Intercept (tm) products of corrosion control originated with inventions and patents at Lucent labs ( AT&T ) for packaging made of polymer bound...
Here is another thread on the subject. :) http://www.cointalk.com/t45244/
It seems to be a coincidental mark to me. Overdates have been eliminated in US coins over the last century or so by the minting process. Those...
Thanks to all for the nice words. The Venice coin was the first I had seen, not being a world coin collector, and stood out along with the 1804 ,...
Scans of proofs are very often better than the average camera shot because the coin is flat on the surface and the light is basically...
Acetone has been often mentioned as a means to remove PVC plasticizers/infections, but it also can be used to remove any loosely bound molecular...
That was my thinking (within the range of difference the die state and the strike strength might alter). Looking through the bag of 1970-S that I...
I think we need a good close up with good resolution to be able to determine for sure what it may be. The only thing that crosses my mind at the...
Just so there is no confusion, the part in red below is from Wexler and Flynn's Authoritative Reference on Lincoln Cents (2ed) pg 34. The rest is...
I wasn't going to spend much at this weeks club auction,but these caught my eye :) I wanted a 8Reales, so when this 1804 came up for a reasonable...
Mike, nice die break and your large photos are very nice! Easy to tell what is there. Jim
Jesse, I have to ask who was giving this explanation to you. My confusion comes from the published info that there were 2 master dies for 1970,...
This site has been useful to me on these issues. http://www.jdwjme.com/edo/index.htm Jim
At least you have found a knowledgeable dealer for the future. I and many others here would love to have them as a study group. If you decide to...
Mike, that is an interesting comment about treatment/coatings on a die! Are there references to such other than the typical polishings for...
Photos would be nice. There is a 1978-D doubled die obverse which has a wider appearance of the numerals due to the doubling. A relatively minor...
I agree with Jallengomez. MDD & Post-mint Damage. Welcome Cladhunter13, mechanical doubling damage is very common with US coins, and I would...
Separate names with a comma.
