Discovered in 1976 by a man named Billy English, and described in detail before its removal, the slab is now listed simply as missing. What makes the absence particularly striking is how precisely the object itself was recorded before it vanished: a Greek cross, its arms ending in expanded bifurcated terminals, enclosed within a double-banded circle, all carved onto a slab just 28 centimetres wide. A Greek cross has arms of equal length, and the bifurcated terminals, meaning the tips of each arm are split or forked, were a motif common in early medieval Irish stonework. The encircled cross measures 16.5 centimetres in diameter, and the carving is described as shallow on the arms but slightly deeper in the banding of the circle itself.

The slab had been set into the southern wall of a garden attached to Portlick Castle, roughly 195 metres north of where scholars believe it originally belonged. That garden wall sits precisely on the boundary line between the two townlands. Researchers who documented the piece before 1980 suggested it might be a consecration or dedication cross, a type of carved marker used to sanctify a building or space, placed either during construction or as a formal act of religious dedication. The association with place is suggestive: approximately 200 metres to the south-south-east lies a possible early Christian church site, and it is thought the slab may have originated there. Whether it was moved to the garden wall for reuse, safekeeping, or simply convenience at some point in the intervening centuries is not recorded. By the time researchers came to verify its location after 1980, it was already gone.