howd they do that?

[packerbacker]

how'd they do that?

This is a dime I found in a storage locker. It appears that someone, for some reason, used an acid, or other technique, to remove everything but the copper core. On the tails side it still shows a little bit of silver color. The rim is completely gone and coin is very thin. Anyone ever see this done before? pb

 

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[Southcacalaky]

Re: how'd they do that?

Very interesting, HH Art...

 

[Wetgreenie]

Re: how'd they do that?

Hmmm, That very well could be but. I have seen in a Machine shop when someone might mount it for use as an electode in an EDM machine. Usually this would be just for fun or experiment as they try to "burn" the reverse image into a piece of steel or other metal.

If this is what was done, the coin will look sand blasted on one side only.
The details will not show as sharp as normal and it would be thinner.

The electrodes below show as unused condition.

 

[packerbacker]

Re: how'd they do that?

It's pretty strange. I can't believe how thin it is and still have so much relief left in it. This is a pic comparing it to a normal dime's thickness.

 

[bazinga]

Re: how'd they do that?

Not sure how they did it with a dime... but back in high school in chemisty class we would take zinc pennies, chizzle out a tiny bit so you got post the outer layer, and then placed it in some kind of acid and it ate out the entire inside and left a hollow penny. It was actually kind of cool.

 

[Wetgreenie]

Re: how'd they do that?

Must have been acid....did you see what it did to the fingernails!?

 

[PBK]

Re: how'd they do that?

My guess: reverse electroplated to remove the outer layers of the clad dime, leaving only the copper core. Removing that much metal would also reduce the diameter.

 

[hollowpointred]

Re: how'd they do that?

looks kind of like a coin that has been cooking in an electrosis bath for too long.

 

[diggemall]

Re: how'd they do that?

Maybe some variation on this theme:

http://home.earthlink.net/~smalldollars/dollar/add005.html


Diggem'

 

[tmanfromtexas]

Re: how'd they do that?

I have a coin that is a dime on one side and a penny on the other. People with time on their hands can find interesting things to do with it I guess. TMAN...

 

[packerbacker]

Re: how'd they do that?

Yeah wetgreenie, this girl does her nails in some wierd colors and patterns. I told her someone was going to comment on them.

 

[trk5capt]

Re: how'd they do that?

looks kind of like a coin that has been cooking in an electrosis bath for too long.

Hollow, I Was Thinking The Same Thing. trk5capt...

 

[Will_detect4food]

Re: how'd they do that?

lol, maybe thats where the expresion "one thin dime " came from

 

[Noodle]

Re: how'd they do that?

Actually, it looks like most of the coins I pull out of the ground!