denomination fell out of use again during the reign of King James I, while during King Charles I's reign (1625–1649) it was not produced at the London Tower mint, but was produced (sometimes in some quantity) at various provincial mints. The denomination is identified by the numeral III appearing behind the king's head. Threepences reintroduced By far the most common Charles I threepences were produced at the Aberystwyth mint between 1638 and 1642. They feature a left-facing crowned bust of the king with plumes in front of his face and the numeral III behind him, with the legend (or a combination of M(A) B F(R) ET H(I)(B) depending on the engraver), with the reverse showing the royal arms on a large oval shield with plumes above the shield, and the legend – I reign under the auspices of Christ. Plumes were the identifying symbol of the Aberystwyth mint, but the Bristol and Oxford mints often used dies from the Aberystwyth mint so plumes often appear on their output too. Milled coins were produced at the York mint between 1638 and 1649, which look similar to the Aberystwyth product but without the plumes – the obverse features a left-facing crowned bust of the king with the numeral III behind him, with the legend , with the reverse showing the royal arms on a shield over a cross, with over the shield and the legend . Coins were produced at the Oxford mint between 1644 and 1646, using the Aberystwyth dies for the obverse, while the reverse of the 1644 coin shows the Declaration of Oxford in three lines: – The religion of the Protestants, the laws of England, the liberty of Parliament. 1644 Oxford, while around the outside of the coin is the legend – Let God arise and His enemies be scattered. This coin also appears dated 1646. A further type produced at Oxford had on the obverse the king's bust with the denomination behind him, and the letter "R" (for Rawlins, the maker of the die) below the king's shoulder and the legend and the Aberystwyth reverse. Rarer threepences The mint at Bristol produced rare threepences in 1644 and 1645. In 1644 the Aberystwyth obverse was used to produce a coin with the reverse showing the Declaration of Oxford: – The religion of the Protestants, the laws of England, the liberty of Parliament 1644, while around the outside of