Silver Tostão of D. Filipe II (1598–1621), a rare and unpublished issue, representing the only known specimen documented to date with a reverse featuring a cross surrounded by 12 separated dots. This 100 Reis silver coin displays, on the reverse, the Cross of the Order of Christ cantoned by five dots "ⵘ" arranged in an X formation, while the cross itself is encircled by 12 evenly spaced dots, three on each arm, positioned with one at the center and one at each extremity. The legend is separated by three dots "∵" and reads: ✣PHILIPPVS.D.G.REX.PORTVGALI.... / IN HOC ∵ SIGNO VINCES.

On the obverse, the crowned Portuguese royal coat of arms is flanked by the letters "L-B", each surrounded by four dots. Additional dots flank both the crown and the lower section of the shield. The crown is of Renaissance style, originally composed of two arches but here simplified into a single beaded arch, richly ornamented.

The reverse also reveals clear evidence of the minting process, with four visible compass guide circles in addition to the beaded border. Within the inner beaded circle, the Cross of the Order of Christ "✠" is again distinguished by its five-dot cantoning and the highly unusual arrangement of 12 surrounding dots grouped in threes along each arm. All these elements are positioned over a secondary compass circle, reinforcing the technical uniqueness of this piece. This configuration represents an unpublished and highly significant variant, and, to current knowledge, no other example has been recorded.