El Bar Americano en España by Pedro Chicote (1927, p.65)

0.33 copitaGordon dry gin base
ice — Unos pedacitos de hielo picadobase
0.33 copitavermut francés — Source omits the repeated unit and uses dash shorthand.modifier
0.33 copitavermut italiano — Source omits the repeated unit and uses dash shorthand.modifier
  1. Sírvase en copa de cocktail y agréguese un pedacito de limón.

Ice: Ice

Cocktails by Pedro Chicote (1928, p.204) — French and Italian vermouth split

0.33 copitadry gin — Gordon dry ginbase
0.33 copitaFrench vermouth — Vermut francesmodifier
0.33 copitasweet vermouth — Vermut italianomodifier
  1. Build over cracked ice and serve in a cocktail glass with a small piece of lemon.

Garnish: Lemon piece

Ice: Cracked ice

This matters because it preserves a Madrid equal-parts perfect-style aromatic with explicit Gordon and dual-vermouth logic.

The source presents this as a built large-glass preparation passed into cocktail service.

See also: Perfect Cocktail, Martini Cocktail