Napier car name plate

Hello

I am Jonthan Davis from Tasmania Australia. I have just acquired a name plate from Napier chassis no 9474.

This brass plate has wording

S.F. Edge Ltd 14, New Burlington Street London, W

Napier chassis no 9474

Do you have any records that could identify what model and year no 9474 was, and if possible the puchaser ?

Thanking you regards Jonothan Davis

Email

jonothan.davis@aad.gov.au