A specimen of this type (now lost) was found at Dorestad, which was during Beonna's time an important trading centre: these coins resemble Frankish or Frisian deniers that were issued from the Maastricht area during this period.
A specimen of this sort (now lost) was found at Dorestad, which during Beonna's reign functioned as a key commercial center: these coins are comparable to Frankish or Frisian deniers issued from the Maastricht region during that period.