Hello,
I have a French 50 centimes 1939B, which has a KM number of 894.2 (according to the catalog 2009). In the numista database it says only km# 894 with Bruxelles mintmark.
All other coins in the range 1931-1947 Alluminium-Bronze should have km# 894.1
https://en.numista.com/catalogue/pieces890.html
Beehive