A nice piece.
A distinctive, rare variety with the date under the bust.
Obverse: in the rim bust of the ruler to the right, in the outer rim legend:
*FERDINANDVS-III-D:G:ROM:IMP:S:A:G:HV:BO:REX;
Reverse: in the rim a crowned shield of the coat of arms, in the outer rim a legend:
ARCHI:AVST:DVX---BVRG:STYRIAE-E 16-46;