A nice piece. Variant with four balls under the bust on the obverse.
Obverse: bust of the emperor wearing a radial crown, armor and paludamentum, to the right, in the rim the legend:
AYT K G ME KY DEKIOC TRAIANOC CEB;
Reverse: eagle to the right, in the rim legend:
ΔHMAPX ΕΞOYCIAC, in the SC odcnik.
Silver, diameter 26 mm, weight 10.53 g, axis 12 h.