The mint may have been located in Rougemont Castle.  In 1232, Exeter's Castle, as well as many others, was seized by Henry III, who gave it to his younger brother, Richard, Earl of Cornwall. In 1286, Edward I. granted it to Matthew Fitzjohn for life; but it continued nevertheless, chiefly in the Earls of Cornwall. The mint at Exeter has a long history. From the very rare coins of Alfred the Great (871-99), though the Anglo-Saxon and Norman kings to the Medieval coinage up to 1300. Exeter did not mint coins again until the Civil War when coins were produced for the Royalist forces in 1644 and 1645. The final phase of coin production in Exeter was for the great recoinage ordered by William III in 1696-98. During Henry III's reign the Exeter mint was amongst the first group of provincial mints to commence operations, and all four moneyers there issued coins of class 2b2.   

Exeter pennies are not particularly scarce, with just over six hundred noted for the Brussels hoard, however there is a large disparity in the number of early coins versus later. Of the 603 coins in the Brussels hoard, about 15% are from classes 2b2, 3a1 and 3a2, and the remaining almost 85% from classes 3ab1 and 3b, with none for class 3c.  Moneyers active at Exeter were John of Egestone (Okiston), Philip Tinctor (Dyer), Robert Picon and Walter Okestone.