Nice item with very well preserved details.
Ear mark.
Obverse: saints seated facing each other, in the rim legend:
+SS:RVDBERTVS-ET-VIRGILIVS-PATRONI-SALISBVRGENSES-;
Reverse: bishop's coat of arms, surrounded by legend:
+IOAN:ERENSTUS D:G:ARCHIEPS:SALISB:S:SED:AP:LEG:;
