Question for collectors of French coins (1941 5 Francs KM901)

According to Krause, this coin was never released for circulation; however, they show values for condition down to VF. What's the backstory on this coin?

Link to coin: https://en.numista.com/catalogue/pieces1191.html

Most were destroyed but some of them were salvaged:
http://www.worldofcoins.eu/forum/index.php?topic=6087.0

Thanks!