I have gathered the signatures on Sierra Leones banknotes, thruge Moneypedia:
Folder with pictures and spreadsheet:
https://drive.google.com/drive/folders/1DJh7jiYhTdUjRRtNmvRWWUqN0ysYSc6j?usp=sharing
The red names are some where I'm not completly sure of the Wikidata code.
They should all belong under the “Bank of Sierra Leone”, if I haven't missed anything:
https://en.numista.com/catalogue/issuing_entity.php?id=940
Source:
