The items in the scattered hoard were found over a few weeks at the end of 2023.
However, the team, which has been going for about a year, has only now been able to reveal what members found because of laws about treasure discovery.
When treasure of such a nature is found, it must be reported to the local coroner and the landowner.
Verification of the coins has dated them between 1282AD and 1434AD, spanning the reigns of Edward I (1272-1307), Edward III (1327-1377) and Henry VI (1422-1461).
James Luxton, who leads the group, said they were of historical significance but would not “make anyone rich” but the team was enjoying the success.