El Bar Americano en España by Pedro Chicote (1927, p.57)

ice — 3 ó 4 pedacitos de hielobase
8 dropsmarrasquino modifier
0.5 copitavermut francés modifier
0.5 copitavermut italiano — italianomodifier
  1. Sírvase en copa de cocktail y añádasele una corteza de limón.

Garnish: corteza de limón

Ice: Ice

Cocktails by Pedro Chicote (1928, p.140) — Split-vermouth branch

8 dropsMaraschino — Marrasquinobase
0.5 partFrench vermouth — Vermut francésmodifier
0.5 partItalian vermouth — Vermut italianomodifier
  1. Build over ice and serve in a cocktail glass with lemon peel.

Garnish: Lemon peel

Ice: 3 to 4 pieces ice

This matters because it preserves a split-vermouth aperitif under a distinct Spanish title rather than a generic perfect-cocktail name.

See also: Perfect Cocktail, Martini Cocktail