A very nice piece of the rarer thaler.
Obverse: head in laurel wreath, clockwise, mint mark A below it, legend in the rim:
FERD-I-D-G-AVSTR-IMP-HVNG-BOH-R-H-N-V-;
Reverse: eagle of the empire, in the rim legend:
REX-LOMB-ET-VEN-DALM--GAL-LOD-ILL-A-A-1845-;