In the Middle Ages, tens of thousands types of uni-faced bracteate coins were struck in the period 1140−1520. The existence of hundreds of small independent currency areas with their own mints in central, eastern, and northern Europe and the strong link between bracteates and periodic...

"This book describes how implementing Grondona's system could help individual countries to independently improve their economic stability, while creating a growing network of currencies between which the exchange-rates will become increasingly stable."