It measures roughly 19 centimetres high and 36 centimetres wide, not much larger than a sheet of writing paper, yet its visible face carries two distinct marks of deliberate human intention: an incised equal-armed cross, drawn in outline, and a line of text running across the stone.

The slab came to light during an excavation in 1944, recorded by Duignan and subsequently noted by Macalister in 1949. Its form, a cross-slab, places it within a tradition of early medieval Irish commemorative or devotional stones, where a simple incised cross, typically equal-armed and without figural decoration, was cut into a flat face of stone, sometimes accompanied by an inscription. The presence of a text on one line is particularly notable; such inscriptions are relatively uncommon on Irish cross-slabs and can carry names, dedications, or requests for prayer. Scholars Okasha and Forsyth catalogued it in 2001 under the designation Toureen Peacaun 4, treating it as an apparently complete example despite its irregular rectangular shape. The church in whose wall it now sits, St Peakaun's, is itself a site of early ecclesiastical significance in Tipperary, and the slab's incorporation into the fabric of the building means it has survived, if not entirely on its own terms, then at least intact within a place connected to its original context.