Help... 2010 Lincoln Dollar Error Missing Edge Lettering

It's surprising you weren't able to find anything about this error because it is known to exist, but more frequently in earlier years. Here's a page with some additional information: http://presidentialdollarguide.com/...-error-coins

One like yours sold on ebay about a month ago for $40: http://www.ebay.com/itm/112897679378

Good find!

to the CCF!

Just confirming here...is this because unscrupulous folks will just remove enough metal from the edge to obliterate the letters (thus reducing the weight of the coin)?

Spence,People will remove the edge lettering or just "smooth" them out without removing any metal.
Jgray1221,please let me (us) know the outcome.
John1

The amount of metal removed to remove the lettering is not enough to put the coin out of tolerance, so weight will not tell you anything.

Cost to have slabbed will pretty much wipe out any additional value.

Yes, but like I said it will still be within tolerance so unless you know what it actually weighed before the lettering was removed you would never know from just weighing it. Spec weight on the coin is 8.1 grams, but the tolerance is +/- .3 grams.

You MIGHT be able to tell by measuring the diameter with a micrometer, but there is a problem there as well. The coin has a spc diameter of 26.5 mm, but that would probably be the diameter of the coin pre lettering. Since the diameter would probably also vary depending on the pressure applied by the lettering dies the diameter also has a tolerance range which I DON'T know.

One thing which will normally identify removed lettering is a close examination of the edge. On a regular plain edge Sac dollar the three layers are visible but not clearly defined and there are fine lines that run across the edge from the shearing of the metal from the punching out of the blank AND "scratched" on the edge from the ejection of the coin from the collar. To remove the lettering the coin is often mounted on a lathe, spun up and then either a cutting tool or sandpaper is applied to the edge. This results in the layers being clearly defined, and there are scratches/tool marks running AROUND the edge rather than across it.

Coop, I don't have my own images but they can be found here on pages 16 and 17. Check with them and they will probably allow you to make up your educational aids.

https://minterrornews.com/issue2007special.pdf

Also in that issue they give weights of genuine and altered pieces with the edge lettering removed and it does show that weight is NOT a good way to identify them and I mentioned.