Oktaaf KeuninkOktaaf Keunink.

Oktaaf Keunink (sometimes written as Octaaf, even though most album titles refer to the series as "Oktaaf") was a Belgian comics series, written and drawn by Marc Sleen. It was published between 16 November 1952 and 4 April 1965 in the magazine Ons Zondagsblad. On 1 January 2030, all comics series by Marc Sleen, including Oktaaf Keunink, will enter public domain, in accordance with the Marc Sleen Foundation.