1771 Peru 8 Reales Pillar

What you are talking about is a variety of edge clipping. There were many ways to steal silver from a coin and then pass it off in change.

But in this case, the only way that would be possible was for the entire edge to have been filed off and a NEW INCORRECT edge applied. I have a few examples of that actually happening. Coins of this type are still classified as "Counterfeit" under the category of FRAUD.

The problem with this edge is the pattern that remains. The real edge has circles and rectangles that are raised above the edge. Here the edge is highest and the circles and squares are pressed INTO the edge. There is no way in my opinion to turn a real edge design into this pattern by filing.

Either a Counterfeit or a Fraud of this type is of roughly the same value anyway (at least to me). Neither are collectible as "REAL" coins.

Frauds just like Counterfeits are divided into two general types - Frauds meant to be used in circulation to steal a part of the silver and - Numismatic - frauds that meant to increase the value of a coin to collectors (repaired holes - changed dates, changed assayer initials or other alterations to make the coin appear rare).

Historic frauds are generally considered to be collectible but numismatic frauds are only of use to study techniques.

OK I will look for it.