This is a 1977 D Roosevelt dime. I have been referring to it as my thin dime. It is about as thick as 2 sheets of stacked new copy paper. Significantly thinner than a normal dime. It has a very copper color. Although the pics donn't make it obvious the image on both sides are fully formes but not raised as much as on a normak coin. It apears to have all image and literal elements on both sides. It does not have a raised edge and the circumference is completely reeded. When stacked over a normal dime it is very slightly smaller in circumference. Possibly by the difference of the lack of raised edge. I have posted pics of inverted images to hopfully provide better contrast. I hope you enjoy it. If you have any information concerning any other similar errors, please post. If you understand how this happened, I would also value that information.
Somebody soaked that in some kind of acid until all the CuNi was removed from the copper core. Probably some bored kid:goofer:
acid bath I am not framiliar with using acid on coins. But reading the responses to the various threads it appears to be a frequent response to explain the condition of the coin. Conceptionally I do not think that a coin as consistant in its dimensions as this coin and with a surface that may not be as sharp as a coin from a full depth planchet it appears weak not washed out. My perspective of washed out is that the acid would have had an inconsistant effect on the surfaces ( frt and obverse)of the coin. Also the reeding feels very sharp, (well defined) to the touch
gofy, Nevertheless,that's what a clad coin looks like when the outer layers are removed by whatever means.Someone had a bit of free time.
It's exactly that consistentcy that tells you it has been in acid. The acid has eaten away all of the clad layer, it does this at the same rate all over the surface of the coin at exactly the same time. That's why there are no rims left on the coin - the acid ate them away. As for the reeding, it is only still there because it was deep enough to survive the acid. But compare it to a normal coin, the reeding will be even deeper on the normal coin.
Chemical attack -- acid or some other corrosive liquid. The uniformly fuzzy design is a dead giveaway. The reeding will appear scalloped. The fact that it is undersized AND fully reeded is impossible in a genuine coin.
Also a coin that thin could not possibly strike up the details that well. (just don'thave the metal available to do the fill.) If the coin was a normal coin though and reduced in thickness by acid the surface is reduced evenly and the relief and details remain strong all the way down to paper thinness.
This is exactly what a coin looks like from acidic reactions. In chem classes it is really common to experiment with coinage and acids mostly due to the ability to acquire concentrated versions of solutions of things like Sulfuric, Floric, Nitric, Hydrochloric, etc. Then there is always the experiment with gold if you can afford it making Aqua Regia and placing Gold in it to see if dissolve. Just have to put old copper cents in Sulfuric to make Copper Sulfate and then form the blue crystsal. Actually it is known that unless you rotate the coin in the acid one side will get more of the reaction than the other and that is a trick since we have to use glass type forcepts to turn it over. Also, never wipe the coin on your shirt sleeve.
