A very nice, well minted piece.
Variety with L/LI legend ends. Very rare commercially minted variety on wide disc with TRIPL in reverse legend.
A recommended item for the best collections!
Obverse: in the pearl rim crowned monogram SA, on its sides the date 15-6Z, in the outer rim the legend punctuated by triplets:
SIGIS AVG REX PO MAG DVX L;
Reverse: in a pearl rim punctuated by Gediminas' Pillars of Pogon to the left, in the outer rim a legend punctuated by three leaves:
GROSS AR TRIPL-MAG DVCA LI;
Silver, diameter 23mm, weight 2.8g.