It's the Cross of St George of England with over the centre on the cross the defend of the traditional arms of East Anglia, blue with 3 gold crowns. The arms are correctly just like the modest arms of Sweden, from where by the East Anglian royal dynasty, the Wuffingas, https://ricardodscnw.dsiblogger.com/65892556/how-medieval-flag-pole-can-save-you-time-stress-and-money