Carved in high relief, it carries two rings sitting side by side. One is worked in plain interlace, the kind of knotwork pattern familiar from early medieval stonework. The other is something rather more unusual: a ring formed entirely from interlocking animal heads, each creature biting or joining into the next to complete the circle. The two motifs together, so different in character yet framed as a pair, give the tablet an oddly deliberate quality.

What the tablet originally marked is not known with certainty. Researchers, including Geraldine Stout who compiled the record, suggest it may have functioned as a date stone, a carved marker sometimes set into a building to record its construction or a significant alteration. Date stones were common features in Irish ecclesiastical and vernacular architecture from the medieval period onward, though they usually carried numerals or lettering rather than purely decorative carving. The absence of any legible date, combined with the style of the ornament, leaves the tablet's origins genuinely open. No precise date for the carving has been established.

St. Margaret's is a small village a few kilometres north of Dublin Airport, easy to reach but not a place many people seek out deliberately. The Parochial Hall sits close to the church, and the tablet is visible at the southeast corner of the building. The carving is in high relief, meaning it projects clearly from the surface of the stone, so the detail reads well even in flat light. Worth pausing over, particularly the animal-head ring, where the interlocking forms reward a slow look.