Researcher Jacqueline Cahill Wilson said the stud, found in Walsingham, may have come from a Roman horse harness.
It could have belonged to the troops who were stationed at a Roman town, now Caistor St Edmund, during the Iceni army's uprising in AD61, she said.
The stud is now likely to go on display at the Castle Museum in Norwich.
The stud features a rivet on the back, designed to keep it in place.
It has an outer border around a depiction of Victory, facing right and holding a palm, with two horses.
Ms Cahill Wilson, from the department of archaeology and anthropology at the University of Bristol, said: "It is probably no coincidence that it was found in Walsingham given the role of the Iceni and Boudicca in the uprising in AD61.
"This may in fact have commemorated in some way the suppression of that rebellion."
The stud was declared as treasure by Norfolk coroner Jacqueline Lake.
At the inquest in Norwich, Mrs Lake also declared two gold fragments found at Forncett, near Long Stratton, were treasure.
They could have come from a neck torc or precious bracelet, deliberately broken up and hidden, the inquest heard.
Experts said they dated back to between 50 and 150BC and belonged to someone wealthy from the Iron Age or early Roman periods.
Norwich Castle Museum has expressed an interest in acquiring both of the treasures, the inquest was told.
Source: BBC History
A silver stud found buried in a Norfolk village commemorated the quashing of Queen Boudicca's rebellion, an expert said.