Single-reeded circular plate with flat well; no foot ring. Underside struck "A" and "K" in incuse serif letters near center, and twice with the very faint, partial touch mark of Thomas Byles, only part of a crown is visible. Old, red-bordered, clipped-corner paper label, adhered to underside with yellowed cellophane tape, is inscribed "Thos. Byles / L586 1712 on / only 6 known / examples of this / touch. / Newport / Phila. & Camden".
Maker is Thomas Byles (circa 1685-1771), who worked as a pewtersmith in Newport, RI, 1710-1735; and in Philadelphia, PA, 1738-1771.