A nice, fully legible piece. Rare variety.
Obverse : bust of Emperor wearing laurel wreath with drapery on left shoulder, clockwise, surrounded by legend:
IMP TRAIANVS AVG GER DAC P M TR P COS III P;
Reverse : Emperor seated in curule chair to left, holding spear and patera, surrounded by legend:
DIVVS PATER TRAIANI;
Silver, diameter 18 mm, weight 3.18 g, axis 6 h.