There is also another Gringo/Ringo story called "The Chinaman" by Manuel Medina and Carlos Giménez. Other printings of this story include: O Mundo de Aventuras (Aguiar & Dias, 1949 series) #1069 [Original title: O Chinês].
This is Episode 12 of Sunday. Other printings of this story include: Victor de la Fuente (Toutain Editor, 1982 series) #nn [Original title: El Diablo de los Mil Incendios]; Sunday (Ediciones Glénat, 2006 series) #nn [Original title: El Diablo de los Mil Incendios]; Colt (Semic AS, 1978 series) #10/1984; Lanciostory Anno IV (Eura Editoriale, 1978 series) #6 (February 1978); Pistes Sauvages (Aventures et Voyages, 1972 series) #11 [Original title: L'incendiaire]; Modernos da Banda Desenhada (Portugal Press, 1973 series) #6 [Original title: O Diabo dos Mil Incêndios].
This story is called "Wanted!" in the original in GCD, probably based on a large sign in the first panel.
The artwork in this story is signed and dated 1972.