These coins were indeed the first "modern" bimetallic coin, though the bimetallic collectors out there will all no doubt tell you that they were not the "first". Some earlier examples of bimetallic coins include:
- English farthings of Charles II through to William III (1684-1692) made of pure tin but with a small plug of copper.
- Privately-made patterns/fantasy coins of Britain in the mid-1800s; the theory was to reduce the size of the large copper penny by inserting a halfpenny's worth of silver in the core.
- The United States official pattern "silver center cent" of 1792, using the same size-reduction theory.
What the 1982 Italian coin pioneered, that finally made bimetallic coins mainstream viable, was the method of interlocking the two separate pieces of metal in the blank preparation stage, such that the core could not simply fall out or be easily pressed out. That this was a problem with previous bimetallic efforts is illustrated by the silver center cent: of the 12 known surviving examples, two of them no longer still have their original silver cores.
Don't say "infinitely" when you mean "very"; otherwise, you'll have no word left when you want to talk about something really infinite. - C. S. Lewis