El Bar Americano en España by Pedro Chicote (1927, p.1)

0.25 partdry gin inglés base
ice — 4 ó 5 pedacitos de hielobase
0.25 copitaOporto — Source omits the repeated unit and uses dash shorthand.modifier
0.25 copitavermut francés — Source omits the repeated unit and uses dash shorthand.modifier
0.25 copitavermut italiano — italianomodifier
  1. Sirvase muy frío en copa de cocktail.

Ice: Ice

Cocktails by Pedro Chicote (1928, p.102) — Pedro Chicote 1928

0.25 partdry gin — Dry gin inglesbase
0.25 partFrench vermouth — Vermut francesmodifier
0.25 partItalian vermouth — Vermut italianomodifier
0.25 partport wine — Oportoother
  1. Serve very cold in a cocktail glass.

Ice: 4 to 6 pieces ice

This matters because it preserves a four-way vermouth-port wartime memorial blend in a Spanish source.

Cocktails Recetas seleccionadas by Miguel R. Reguera (1930, p.16)

0.25 partGordon's gin — Gin Gordonbase
0.25 partFrench vermouth — vermouth francesmodifier
0.25 partItalian vermouth — vermouth italianomodifier
0.25 partport wine — oportoother
  1. Shake all ingredients with crushed ice and serve.

Ice: Crushed ice

See also: Perfect Cocktail, Port Wine Cocktail