Some of the most dangerous fakes are made with 3D laser optic profiling the data, from which is loaded into a cutting machine that has a diamond stylus. An original matrix (10x) is cut, using a computer program loaded with the data from the 3D optic laser optic scanning.
This matrix is then tooled carefully before a reduction hub and die is made.
The fake coins are made from melted down .900 silver from common coins, rolled and punched in the normal way. When they are struck, they can show all of the characteristic lustre of a newly minted coin.
These fakes can still be picked by examining the minute tooling marks left behind on the matrix, and of the artificial patination and wear, with the use of comparative photomicrography.
Even the collector can defend himself against these nasties, with the use of a USB microscope, and the use of the 'Net, to compare his pictures with, as well as discussion here in the CCF.
There is an analogy in the development of tank armour, and anti tank weapons designed to defeat it. Better armour gives impetus for the weapons designers to find a better way to defeat it, which gives impetus to the armour designers to design a better way to defeat the weapons ranged against it,---ad nauseum.
Edited by sel_69l
06/26/2012 8:58 pm