Metal plate beneath Linothorakes or Spolades

[PMBardunias]

You won't find an example anywhere where the plates are riveted to each other unless there is no foundation involved.

I learned not to make such generalizations about armor, there always are exceptions. For example, here are some riveted chest sections of coats of plates from the Wisby find that were then riveted to an organic shell. From left to right, the middle section, like an upside down "T" is riveted from 2 pieces, then riveted to the shell- left is the actual find, middle the diagram. In the right is another chest piece consisting of two halve, each made up of two riveted plates that were then riveted to the shell.