The angel, first issued in 1461 with a value of 80 pence, was raised to 90 pence in 1526, and then further to 96 pence (eight shillings) in 1544. By 1550 during the reign of Edward VI the angel was valued at ten shillings.
The denomination continued to be issued at this value through the reign of Elizabeth I and also during the reign of James I.
Good old Google:
Angel:
In 1612 the value of all angels was raised to eleven shillings. This lasted for seven years until 1619, when the a new lighter angel was introduced at ten shillings. The design remained basically the same on the obverse, but the coat of arms on a ship on the reverse changed to a ship in full sail.
The angel was last minted in 1643.
The link does show what appears to be St.George slaying that dragon.
http://www.coins-of-the-uk.co.uk/pics/hamm/eliz/10s/ang5.jpg