Cheerio! A Book of Punches and Cocktails by Charles (1928, p.25)

1 partgin base
1 partOrange gin base
3 dashescuracoa modifier
ice — Fill with ice.other
0.5 teaspoonfulpowdered sugar or honey sweetener
  1. Mix the gin, orange gin, Curacoa, sweetener, and ice in a container.
  2. Stir well before serving.

Ice: Ice

See also: Coral Cocktail, Queen of Ireland

Source sweetens with either powdered sugar or honey.