#6

The story was drawn in 1960 (Santos signed page 31 as 'L.R.S 60 S.I.' and page 2 as '60 Luis R. Santos S.I.').

Also, the back cover has a non-color photograph of Caterina Valente. This photograph was clearly taken at the same photo shoot that was used for the cover of the Zeeman record (https://www.discogs.com/release/1006599-Caterina-Valente-Zeeman) which was released in 1960.