How do you find an archived cache? I think the name is "Old School Learning" by username "xxxxx53"
I couldn't make out the first part of their name but it ended with a 53.
It's in the Frederiksberg area and at the same school as this cache "TC09 #16 - Rheingold a Country Schools Series"
I found it today while exploring the old school and it's in remarkably good shape. Other people have found it as late as July of this year