The piece is roughly two-thirds of a side panel from a chest tomb, a type of raised box tomb common in late medieval and early modern Irish church interiors, and it came originally from St Mary's in Callan, Co. Kilkenny. What makes it worth pausing over is not its incompleteness but its programme of carving: the panel is covered in the Arma Christi, the symbolic instruments of Christ's Passion, rendered in false relief across a limestone surface just over a metre long and sixty centimetres high.

The imagery is densely layered and carefully organised. At the centre is a scourging pillar wound with two ropes, and radiating outward from it are objects drawn directly from the Passion narrative: a cross ringed with a crown of thorns and resting on a skull, three nails, a lantern, and what remains of a pincers now mostly broken away. On the left side of the composition appears Peter's sword alongside the ear of Malchus, the servant of the high priest whose ear Peter struck off in the garden of Gethsemane, the ear shown directly on the blade. Elsewhere on the panel, a cock perches on a pot with scourges to either side, recalling Peter's denial; beneath it, a seamless robe is flanked by three dice and a draw-string purse, referencing the casting of lots and the thirty pieces of silver, which are themselves shown as two rows of coins below. The dexter end of the panel is missing, and a significant crack runs through the arms of the cross, but enough survives to read the full symbolic language with some care. The style connects the piece to the Comerford chest tomb, still intact in St Mary's Callan and dated to 1604, which is attributed to the O'Kerin workshop. The similarity in how the pillars are carved and how several of the Passion symbols are treated suggests both pieces came from the same workshop tradition, and possibly the same hands. The panel was moved from Callan to the OPW depot around 1993, according to Phelan's 1996 account of the piece.