French Indochina

I have a 1 piastre banknote from French Indochina

but it has the “B” mark and it says here that it wasn’t produced ….

it’s in uncirculated condition

see pics …

Do you have a link to the Numista listing?

https://en.numista.com/catalogue/note239312.html

Year line comment: P#76a: Letter B (probably not issued)

https://www.pmgnotes.com/priceguide/world-note-prices.aspx?deid=1737296&subcat=1945%20ND%20Issue&fromsearch=true

I believe it was produced, just not issued for circulation. (?)