Another example of a Borre 1b chape from Hull, Humberside, and an incomplete example from Tupholme, Lincolnshire. Couldn’t find a better picture of the first one, but the damaged right eye stands out. This rare pattern may have been locally produced in Danish England, although another was reportedly found in Iceland.
I personally think these were likely locally produced; back then, making bronze wasn’t as precise of a process as it is today, and the mixture of metals could vary. The fact that each example has a similar pale brownish green patina indicates they’re made of a similar alloy; possibly even made in the same workshop. ᚬ