The Old Waldorf-Astoria Bar Book by Albert Stevens Crockett (1935, p.65)

0.33 partgin base
1 green oliveOlive garnish
0.33 partdry vermouth — French vermouthmodifier
0.33 partsweet vermouth — Italian vermouthmodifier
  1. Stir with ice and serve with olive and lemon peel.

See also: Perfect