Like most cocktails in his book, Harry Craddock called for this cocktail to be shaken. However, modern bartending convention calls for this cocktail to be stirred.
We don't have any cocktail with your combination of ingredients on our database, so I'll be sure to try with a view to adding under your working title: Who Knows. Many thanks.
https://www.diffordsguide.com/g/1121/martini/vesper-martini