Looks like this, with F B lettering ...
https://finds.org.uk/database/artefacts/record/id/846014
which that page says means Ferdinand of Bavaria.
But yes, other lettering does not match. Some of yours
may be
UEIECCO around crowned shield
ISCOLEON NCCOMIO around initials
Obverse description: Crowned five-fold arms, on a crossed sword and
a bishop's crozier behind, dividing the illegible date
Reverse description: The letters F B with a flower below and a cross
rising from the top of the flower, dividing the letters. All within inner circle.