It is approximately five inches long, rather solid, and is engraved with a coat of arms that looks definitely Continental, which bears an "Agnus Dei" superimposed on the eight-pointed Cross of Malta or Amalfi.
We are, therefore, guessing it belonged to a Knight of Malta and is French from the second half of the 18th Century ???





Many thanks as ever for any information and for this most usefule website.
Stewart and Nancy