https://regia.org/research/misc/costs.htm
Anglo-Saxon England - Coinage
https://en.wikipedia.org/wiki/Coinage_in_Anglo-*Saxon_England*
https://en.wikipedia.org/wiki/History_of_the_English_penny_(c._600_%E2%80%93_1066)
Early Anglo-Saxon coins
https://www.britannica.com/topic/coin/Coins-of-the-British-Isles-colonies-and-Commonwealth
Anglo-Saxon and Early Norman Agricultural Economy
Agricultural periods - Anglo-Saxon
Silk Road > .
https://youtu.be/tzPi6D0dEoc?t=134
Medieval England
Birmingham Market ~1300
https://youtu.be/JZq9cBzrIVI?t=1m16s
