A "Texas" nickel. (Everything's bigger in Texas.)
There are two ways for a coin to be larger than its specified size. One is to be broadstruck (no collar in place and the planchet spreads out to a larger diameter.) The other is to be put between two pieces of moderately thick leather and be carefully beaten with a hammer. (The leather conforms to the surface of the coin so it transmits the energy of the hammer blows evenly to all parts of the coin.)
On the broadstrike the image of the coin is sill the same size as that of a normal coin (Sometimes with some stretching of the lettering around the edge.).
On the Texas coin, since the energy is distributed evenly as the diameter enlarges so does the lettering and devices, and so does the spacing between them and it ALL increases at the same proportional rate. So what you end up with looks just like a normal coin, just bigger. (On copper plated cents it does cause the plating to flake off.)
It would be possible for a mint worker to place by hand a larger than normal planchet between the dies and strike it, but in that case the coin image would still be the normal size, and the weight would be wrong. On a broadstrike or Texas coin the weight would be normal.
Edited by Conder101
06/24/2020 10:36 pm