Polycopi comes from the name of the machine that was (back in the days) used to produce these. That machine was called a polycopieuse and somehow (don't ask me how) transfered ink on multiple pieces of paper via some alcohol based transfer method.
Polycopi comes from the name of the machine that was (back in the days) used to produce these. That machine was called a polycopieuse and somehow (don't ask me how) transfered ink on multiple pieces of paper via some alcohol based transfer method.