Over at A Commonplace Book, Will McLean has a couple of short articles on the English social hierarchy at the time of the Canterbury Tales, and the value of money at the same time.
Image: A Richard II London groat (4d or pence) from a site by Ivan Buck. Alas, no depiction of the golden angel.
Update: Hoisted from comments:
Got no golden angel, but can do you a golden leopard... a relevant one too :-)