In Chaucer's time, Aldgate was a neighborhood of
London in which people who practiced
a diverse array of trades lived and worked together (e.g., bakers, goldsmiths,
vintners, and fishmongers).
This is the guild seal of the fishmongers of Bruges (in Flanders, 1407). The
seal depicts a man fileting a fish and the inscription reads: "[segel] van
der visch coper[s van Br]ugghe" (seal of the fishmongers of Bruges). This
seal is catalogued as F4757 in the Archives Nationales (Paris).
If you are so inclined, take a look at some
more
Flemish seals.