In medieval Egypt, the Twenty-four Elders of the Apocalypse were sometimes represented as standing priests who swing burning censers. Two extant, darkened depictions of this theme in Old Cairo were restored for the first time in the early 1980s. One of them is part of a double apse composition in the Al-Mu.allaqa Church in the Babylon Fortress, restored anew by the Russian Al-Mu.allaqa Project (20042010). The other one is a panel painting housed in the nearby Church of St. Mercurius in Dayr Abu Sayfayn. This study attempts to interpret them in terms of one another, noting their affinities and differences in iconography, style and deterioration.