Stir, strain, lemon twist garnish.
The OP had 2 dashes of orange bitters instead of the absinthe, no lemon twist, an ice ball and olives (see picture). The Savoy calls for 1/3 ea gin, French and Italian vermouth and 4 dashes of absinthe.
David Wondrich, "Imbibe!", pg 246 cites Albert Stevens Crockett's "Old Waldorf Bar Days" (1931)