I recently wrote this for the Tyneside Numismatic Society newsletter, I would be interested in knowing what I have missed / got wrong. Thanks again to the members here who allowed me to use their research and pinch their images. I hope the link works, https://drive.google.com/file/d/0B2qSaEwccf4fS3dZSWJVWkRDRDA/view?usp=sharing  Ian..