Thanks. I have one in nicer shape from the series, and same origin. The cathedral of York. This one also has the legends in german. Part of a collection brought from there in the fifties.

A detail of craftsmanship. This one has high relief on one side and the other side excavated. The excavated area in one side matches high area on the other. I do not have proper calipers but the medal is noticeably thin there and the depth of the reverse would be impossible without matching relief on the obverse.
This one is 10% lighter that the one for the Cologne cathedral, with high relief on both sides.
The bright copper is nice. The original brown patina that can be seen intact around the top of the towers must have been lovely.
This one was only lightly scrubbed. I think it would easily regain its brown patina. But I will leave the varnish on. It is now part of their history.