Cover No title recorded Cover, 1 page
Read more about Gringo.
Comic story, 36 pages
- First print
O Mundo de Aventuras (Aguiar & Dias, 1949 series) #951 (December 1967) — O Duelo
- Also printed
Ringo (Sport Magazine, 1967 series) #4 (June 1968) — The Duel
Politikin Zabavnik (Politika, 1952 series) #1053 (3 March 1972) — Dvoboj
Ringo (KG Murray, 1974 series) #29 ([April 1974?]) — The Duel
The indicia for this issue is not recorded. The identified publisher might be an associated or parent company, rather than the specific listed publisher.