Reprints from US Fawcett Comics.
Rotogravure printed.
Denis Gifford's "The Complete Catalogue of British Comics" reports a single unnumbered UK issue of Ibis the Invincible in 1950 (Miller, 16p, gravure). It is possible the cover listed here without Miller branding is incorrect. It is most likely to be a separate issue from an unknown publisher as the two recorded covers are from #5 and #6 of the US series.